Patent Description:
The firearm according to the invention may preferably be a carbine, but it may also be a semiautomatic or automatic rifle, a machine gun, a repeating rifle, a shotgun, some other rifle, a submachine gun, a pistol etc. Firearms are guns that can be carried and used by one person.

In recent years, it is increasingly being demanded by various interest groups that it must be possible to be able to uninstall and reinstall the barrel of a firearm, in particular a carbine, without great effort. This may take place for example in order to be able to use barrels of different lengths, or else to be able to use barrels of different calibres. Furthermore, this may also be helpful in order to allow improved transporting or cleaning of the firearm.

<CIT> discloses in this respect a dismantlable firearm, with a barrel frictionally held in a receiver by means of a clamping device, wherein the clamping device has two clamping jaws which can be clamped in opposite directions and lie against the barrel, and also a clamping element, with which the clamping jaws are pressed against the barrel.

The clamping device disclosed in <CIT> requires a greater amount of space and is also insufficiently user-friendly.

The object of the present invention was to provide an improved barrel assembly, as well as an improved firearm.

This object is achieved by a barrel assembly for a firearm, in particular for a carbine, as well as a firearm comprising the barrel assembly, according to the claims.

The invention concerns a barrel assembly for a firearm, in particular for a carbine. The barrel assembly comprises:.

The barrel assembly according to the invention has the advantage that the clamping device or the eccentric clamp can be of a simple and space-saving construction. As a result, improved operation of the eccentric clamp is made possible. Furthermore, this measure allows the eccentric clamp to be formed on the firearm while taking up as little space as possible.

It may also be expedient if the first clamping jaw and the second clamping jaw are at least in some sections separated from one another by a slit, wherein the slit separates the clearance and the clamping lever mount from one another. This has the advantage that this measure allows the first clamping jaw and the second clamping jaw to be displaced in relation to one another, in order to be able to be clamped by means of the eccentric clamp.

It may be provided in particular that the clamping lever mount of the first clamping jaw reaches beyond the weapon median plane into the second clamping jaw.

It may also be provided that a clamping lever bolt is formed on the clamping lever mount and that a clamping lever hole is formed in the clamping lever, wherein the clamping lever bolt reaches into the clamping lever hole. This measure allows the clamping lever to be easily mounted on the clamping lever mount.

It may additionally be provided that the clamping lever is secured on the clamping lever bolt by means of a clamping-lever securing ring.

It may also be provided that the clamping device has a base, wherein the first clamping jaw and the second clamping jaw are formed as one part with the base, wherein the slit extends from the base over a longitudinal extent of the first clamping jaw and the second clamping jaw. In the case of such an embodiment, a clamping of the clamping jaws can be achieved as a result of the attachment of the first clamping jaw and the second clamping jaw to the base element and as a result of the formation of the slit with an elastic deformation of the base element or of the clamping jaws.

It may also be provided that the clamping device has on an underside, between the base and the first clamping jaw and/or between the base and the second clamping jaw, a transverse slit, which adjoins the slit. In other words, it may be provided that the first clamping jaw is only coupled to the base in the region of a first side wall and/or that the second clamping jaw is only coupled to the base in the region of a second side wall. This measure can achieve the effect that the first clamping jaw and the second clamping jaw can more easily be clamped in relation to one another by means of the eccentric clamp.

It may additionally be provided that the abutment is kept at an abutment distance from a weapon median plane, and the pivot axis is kept at a clamping-lever mount distance from the weapon median plane, wherein the abutment distance extends into a first side of the weapon median plane and the clamping-lever mount distance extends into a second side of the weapon median plane,.

It may also be provided that the abutment is kept at an abutment distance from a weapon median plane, and the pivot axis is kept at a clamping-lever mount distance from the weapon median plane, or the pivot axis lies in the weapon median plane, wherein the abutment distance extends into a first side of the weapon median plane and the clamping-lever mount distance likewise extends into a first side of the weapon median plane, but the clamping-lever mount distance is less than the abutment distance.

The embodiment with an abutment component has the advantage that it can be easily produced. It may be provided in particular that the abutment component is fastened on an underside of the second clamping jaw and the first clamping jaw protrudes downwards.

The embodiment with the cover plate has the advantage that such a construction can be easily produced and in addition can be mechanically robust. It may be provided in particular that a clamping device formed in such a way takes the form of a cast part, which can be worked by machining.

It may be provided in particular that the cover plate is formed on an underside of the second clamping jaw and the first clamping jaw protrudes downwards.

It may be provided in particular that a butting block on which the abutment is formed is mounted in the cover plate. It may be provided in particular that the butting block is formed by a hardened component.

Also advantageous is a specific embodiment according to which it may be provided that on the second clamping jaw a first abutment fastening is formed on a first longitudinal side of the clearance and, at a distance therefrom in the axial direction of the barrel bore axis, a second abutment fastening is formed on a second longitudinal side of the clearance, wherein the abutment component is coupled to the first abutment fastening and to the second abutment fastening, wherein the abutment component spans the clearance. Particularly this measure allows a simple realization of the abutment to be achieved.

According to a development, it is possible that the first abutment fastening takes the form of a first bolt and the second abutment fastening takes the form of a second bolt, wherein the first bolt and the second bolt are mounted on the second clamping jaw, wherein the abutment component has a first hole for receiving the first bolt and a second hole for receiving the second bolt. Particularly an abutment fastening constructed in such a way can be of a simple construction. Consequently, the abutment can be easily installed and easily uninstalled again.

It may also be provided that the first hole takes the form of a slot which extends in a transverse direction in relation to the barrel bore axis and that the second hole takes the form of a slot which extends parallel to the longitudinal extent of a barrel bore axis. This is accompanied by the advantage that this measure allows for anticipated production-related tolerances of the individual components to be compensated when configured in the installed state. It is consequently not necessary that the first bolt and the second bolt are arranged at exactly the same distance from one another as the first hole and the second hole.

It may additionally be provided that an adjusting-screw threaded hole that leads into the first hole is formed in the abutment component, wherein there is an adjusting screw screwed into the adjusting-screw threaded hole, wherein the adjusting screw lies against the first bolt directly or by means of an interposed transmission element and wherein the adjusting screw is designed for adjusting the position of the abutment. This is accompanied by the advantage that this measure allows the clamping of the first clamping jaw and the second clamping jaw or the distance from one another of the first clamping jaw and the second clamping jaw to be set when the clamping lever is in the clamping position.

In an alternative embodiment variant, it may be provided that the second hole takes the form of a slot which extends in a transverse direction in relation to the barrel bore axis and that the first hole takes the form of a slot which extends parallel to the longitudinal extent of a barrel bore axis and that an adjusting-screw threaded hole that leads into the second hole is formed in the abutment component, wherein there is an adjusting screw screwed into the adjusting-screw threaded hole, wherein the adjusting screw lies against the second bolt directly or by means of an interposed transmission element and wherein the adjusting screw is designed for adjusting the position of the abutment. The aforementioned advantages can be transferred here mutatis mutandis to this exemplary embodiment.

It may also be provided that a securing hole that leads into the adjusting-screw threaded hole is formed in the abutment component, while held in the securing hole there is a securing screw which clamps the adjusting screw.

The adjusting screw and the securing screw may be formed as worm screws.

It may also be provided that a first securing ring is arranged on the first bolt and that a second securing ring is arranged on the second bolt, wherein the first securing ring and the second securing ring serve for securing the abutment component. This has the advantage that the abutment component can be easily and reliably fastened on the second clamping jaw.

It may also be provided that the abutment component has first material properties and the first clamping jaw and/or the second clamping jaw has second material properties, wherein the first material properties are different from the second material properties. It may be provided here that the abutment component is hardened, in particular that the abutment has a higher hardness than the second clamping jaw. It may also be provided that the abutment has a higher modulus of elasticity than the second clamping jaw.

It may also be expedient if the pivot axis is arranged vertically, in particular that the clamping lever mount is arranged on an underside of the clamping device. This has the advantage that the clamping lever can be moved between its clamping position and its releasing position by lateral pulling. This is particularly ergonomic, and the clamping lever can consequently be easily operated by a user.

In an alternative embodiment variant, it is also conceivable that the pivot axis is arranged horizontally. In the case of this embodiment variant, the first clamping jaw and the second clamping jaw may be arranged vertically one above the other, and the clamping may take place in a vertical direction.

It may be provided in particular that the clamping lever has a longitudinal extent, wherein the clamping lever in the clamping position is aligned parallel to the barrel bore axis. When transferring the clamping lever into the releasing position, the clamping lever can be pivoted out of its clamping position into its releasing position by means of a user exerting lateral pulling.

It may additionally be provided that the first clamping jaw is delimited by a first outer delimiting plane and the second clamping jaw is delimited by a second outer delimiting plane, wherein the pivot axis is arranged within the first outer delimiting plane and the second outer delimiting plane. This has the advantage that the clamping device can be of a particularly space-saving construction and in addition, with a clamping lever in the clamping position, it can be achieved that no components project laterally with respect to the eccentric clamp, in particular with respect to the first clamping jaw and the second clamping jaw.

The first outer delimiting plane and the second outer delimiting plane may be formed by external surfaces of the clamping device.

It may also be provided that the first outer delimiting plane and the second outer delimiting plane are aligned vertically.

It may also be provided that a receiver, in particular an upper receiver is formed, wherein the clamping device is fastened on the upper receiver by means of fastening means. This measure allows easy connection between the upper receiver and the clamping device to be achieved.

According to a particular specific embodiment, it is possible that the first clamping jaw and the second clamping jaw are formed as components that are structurally independent of one another and that the upper receiver is of a U-shaped form and, when viewed in cross section, has a first leg and a second leg and an upper-receiver base connecting the first leg and the second leg, wherein the first clamping jaw is fastened on the first leg and the second clamping jaw is fastened on the second leg. This has the advantage that this measure allows the first clamping jaw and the second clamping jaw to be easily clamped in relation to one another. In particular, this may involve the upper receiver being elastically deformed, while the deformation of the upper receiver or the elasticity of the upper receiver can at the same time be used for returning the two clamping jaws.

In an alternative embodiment variant, it may also be provided that the receiver at least partially takes the form of a hollow profile and is consequently of an O-shaped form. In the case of such an embodiment variant, the receiver would not be assembled from an upper receiver and a lower receiver but would be formed as one part.

According to an advantageous development, it may be provided that a barrel extension is formed, wherein a barrel mount, which serves for the mounting of the first barrel end of the barrel, is formed in the barrel extension and wherein the barrel is coupled to the barrel extension and wherein the first clamping jaw and the second clamping jaw of the clamping device act on the barrel extension. This has the advantage that the barrel and the barrel extension can together form necessary shaped elements or hollow spaces. As a result, the components can be produced in a less complex production process than when the shaped elements and/or hollow spaces are formed directly in the barrel.

In the case of such an embodiment variant, the barrel is not directly clamped by the clamping device, but the barrel extension in which the barrel is mounted is clamped. It may be provided here in particular that the barrel is inserted in the barrel extension by a form-fitting connection.

In an alternative embodiment variant, it is also conceivable that the barrel has the structural features of the barrel extension. The barrel and the barrel extension can consequently be formed as one part, as integral components. In the case of such an embodiment variant, the first clamping jaw and the second clamping jaw can act directly on the barrel.

As an alternative to the barrel extension embodiment, it may be provided that the barrel is mounted directly in the clamping device, or is held by it.

It may be advantageous in particular if a first prism guide is formed on a first side of the barrel extension and a second prism guide is formed on a second side of the barrel extension, wherein a first counter guide, corresponding to the first prism guide, is formed on the first clamping jaw and wherein a second counter guide, corresponding to the second prism guide, is formed on the second clamping jaw. This measure allows the barrel extension and/or the barrel to be mounted exactly in position in the clamping device. In particular, this measure can achieve the effect that the barrel or the barrel together with the barrel extension can be pushed into the clamping device in the direction of longitudinal extent of the barrel bore axis.

It may also be provided that the barrel extension has a barrel extension slit running in the longitudinal extent of the barrel bore axis, wherein the barrel extension is deformable, so that the barrel mount can be pressed in a radial direction against the first barrel end. This has the advantage that this measure allows the forces of the first clamping jaw and the second clamping jaw that are applied by the clamping device to the barrel extension to be transmitted to the barrel mount as a result of a deformation of the barrel extension made possible thereby. Consequently, the barrel can be clamped in the barrel mount of the barrel extension not only with a form fit but also with a force fit. This measure allows improved accuracy of the firearm and/or a reduction in the dispersion to be achieved.

It may be provided in particular that the weapon median plane is formed in the middle of the barrel extension slit.

It may be additionally provided that a pivot bearing is formed on the clamping device, wherein the pivot bearing serves for the pivotable attachment to a receiver. This has the advantage that this measure allows the barrel to be attached directly pivotably to the receiver, whereby a great positional accuracy of the barrel assembly and the receiver can be achieved. The pivot bearing may in particular take the form of a sliding bearing. In particular, the pivot bearing may be arranged on an underside of the clamping device. It may also be provided that the pivot bearing is formed on the base of the clamping device. It may be provided in particular that the receiver is formed as a lower receiver.

Also advantageous is a specific embodiment according to which it may be provided that a handguard is formed, wherein the handguard is removably coupled to the clamping device by displacement in the axial direction of the barrel bore axis. This has the advantage that this measure allows the handguard to be easily coupled to the clamping device.

According to a development, it is possible that a securing element is arranged in the handguard, wherein the securing element is formed in such a way that the handguard can only be pushed onto the clamping device when the clamping lever is in the clamping position and that, in the assembled state of the handguard and the clamping device, the clamping lever is secured in the clamping position by means of the securing element. This has the advantage that this measure allows the risk of incorrect clamping of the barrel of the completely assembled firearm to be reduced. In addition, this measure can achieve the effect that undesirable loosening of the barrel from the clamping device when the handguard is fitted is prevented as far as possible.

It may additionally be provided that the clamping lever has a locking lug, wherein the locking lug is formed in such a way that the clamping lever with the inserted barrel and barrel extension can only be transferred into the clamping position when the barrel extension is correctly inserted in the clamping device. This has the advantage that this measure can achieve the effect that the barrel can on the one hand be additionally secured by the locking lug against being pulled out axially and on the other hand it can be ensured that the locking lever can only be transferred into the clamping position when the barrel is correctly inserted in the clamping device, that is to say when the barrel has been pushed completely into the clamping device in the axial direction.

It may also be provided that an axial stop, which serves for the axial positioning of the barrel extension in relation to the clamping device, is formed on the barrel extension. It may be provided in particular that the barrel extension butts against the clamping device in the axial direction by means of the axial stop, and is consequently positioned in relation to the barrel extension in the axial direction.

It may also be provided that in a firearm the barrel assembly is formed according to one of the specific embodiments above.

It may be provided in particular that the first clamping jaw and the second clamping jaw are separated from one another by the slit. The slit may form a constant distance between the first clamping jaw and the second clamping jaw in the longitudinal extent of the barrel bore axis. The clearance of the second clamping jaw may also be referred to as a depression. Seen in the longitudinal extent of the barrel bore axis, an elevation may be formed before the depression and after the depression. In particular, the clearance may have the effect that the second clamping jaw is shaped in a way similar to the hump of a camel. The first clamping jaw may be shaped in a way which complements the second clamping jaw, wherein the clamping lever mount may take the form of an elevation which can reach into the clearance of the second clamping jaw. In other words, it may also be said that the first clamping jaw and the second clamping jaw partially overlap. The overlapping is in this case characterized in that the first clamping jaw and the second clamping jaw are separated from one another by the slit, wherein, seen over the longitudinal extent of the barrel bore axis, the position of the slit is displaced transversely to the barrel bore axis. This specific embodiment can be seen well in <FIG>.

In the case of a one-part clamping device with clamping jaws rigidly connected to one another, clamping or displacing of the first clamping jaw and the second clamping jaw in relation to one another can be achieved as a result of the elasticity of the material of the clamping device.

If the first clamping jaw and the second clamping jaw do not have any direct rigid connection to one another, but are formed as independent components which are arranged on the upper receiver part, the elasticity of the material of the upper receiver part can be used for the clamping and/or displacing of the first clamping jaw and the second clamping jaw in relation to one another.

The deformation of components within the limits of their elasticity can be used here to achieve a spring-elastic recovery of the first clamping jaw and the second clamping jaw, so that, when there is an opening of the eccentric clamp, the first clamping jaw and the second clamping jaw are moved away from one another.

It may also be provided that the clamping device has a sleeve segment, wherein the sleeve segment surrounds the barrel in some sections in the form of a sleeve, wherein the first clamping jaw and the second clamping jaw are coupled as one part to the sleeve segment. This is accompanied by the advantage that this measure allows the first clamping jaw and the second clamping jaw to be held in their position by the sleeve segment.

The definition that the sleeve segment surrounds the barrel in some sections in the form of a sleeve may mean in a first embodiment variant that the sleeve segment lies directly against the barrel. In a further embodiment variant, the definition that the sleeve segment surrounds the barrel in some sections in the form of a sleeve may also mean that a further component is arranged between the sleeve segment and the barrel. This further component may be for example the barrel extension.

The enclosing of the barrel or a barrel extension may allow increased precision of the firearm to be achieved.

It may also be provided that the sleeve segment together with the first clamping jaw and the second clamping jaw form an inner clamping surface, wherein the inner clamping surface substantially takes the form of a cylinder segment, wherein the first clamping jaw and the second clamping jaw are designed for deforming the inner clamping surface. This is accompanied by the advantage that the described mechanism for clamping the first clamping jaw and the second clamping jaw allows the inner clamping surface to be made smaller, and consequently the barrel to be clamped. The clamping action is based here on the clasping of the barrel by the sleeve segment and the mutual clamping of the first clamping jaw and the second clamping jaw. That the inner clamping surface substantially takes the form of a cylinder segment means that forms departing from the geometrically ideal form of a cylinder segment, which are caused for example by the deforming of the inner clamping surface, can likewise be seen as being in the form of a cylinder segment. It may be provided in particular that the inner clamping surface in the unloaded state has the form of a cylinder segment. The production of the inner clamping surface may be achieved by corresponding production processes, such as for instance milling out, grinding, honing or broaching. In particular, in this way production of the clamping device can be more efficiently achieved. In addition, by this measure a weight saving can be achieved in comparison with other embodiments. Furthermore, by this measure the installation space can be reduced.

It may also be provided that a force transmission component is formed, wherein the force transmission component is mounted on the sleeve segment and is supported on the upper receiver. This is accompanied by the advantage that by this measure the forces can be transmitted from the barrel to the upper receiver.

It may also be provided that the force transmission component has a force transmission projection, wherein the force transmission projection is supported on the barrel extension. By this measure, the forces can be transmitted directly from the barrel extension to the upper receiver. The sleeve segment may serve here as a carrier for the force transmission component.

It may also be provided that formed in the barrel extension is a shaped recess, which matches the force transmission projection. This allows a longitudinal stop and consequently a linear positioning of the barrel extension in relation to the clamping device to be achieved. Furthermore, by this measure it can be achieved that the barrel extension is prevented from twisting in relation to the clamping device.

In the following, the terms left, right, above, below, front/forward and rear/rearward always refer to the view of the shooter in the firing direction of the firearm when the firearm is held ready to fire. The firearm may have a weapon median plane, passing through the barrel bore axis and oriented vertically. It may be provided in particular that the weapon median plane forms a plane of symmetry for at least parts of the firearm. As already stated above, in the description and the claims the terms "front/forward", "rear/rearward", "above", "below", "vertical/vertically" and so on are used in the common form and with reference to the subject matter in the position of use, in which the axis of the barrel is aligned horizontally and the weapon median plane is aligned vertically. That is to say that, in the case of the firearm, the muzzle of the barrel is at the "front", that the breech block or slide is moved to the "rear" by the explosion gases, etc. Transverse to a direction means substantially a direction turned by <NUM>° thereto.

For a better understanding of the invention, it is explained in more detail with reference to the following figures.

They respectively show in a greatly simplified, schematic representation:.

As an introduction, it should be noted that in the differently described embodiments the same parts are provided with the same reference numerals or the same component designations, it being possible for the disclosures contained throughout the description to be applied analogously to the same parts with the same reference numerals or the same component designations.

Various embodiments of firearms of the type in question are known. In this respect, reference is made to the applications <CIT> and <CIT>, the content of which is hereby incorporated in this application.

<FIG> shows in a side view a greatly simplified first exemplary embodiment of a firearm <NUM>. To present a clear overview of the individual components of the firearm <NUM>, in the representation according to <FIG> it is shown in an exploded view. The description of the general construction of the firearm <NUM> is based on joint consideration of <FIG>.

The firearm <NUM> comprises a barrel assembly <NUM>. The barrel assembly <NUM> comprises a barrel <NUM>. The barrel <NUM> extends along a barrel bore axis <NUM> between a first barrel end <NUM> and a second barrel end <NUM>. It may be provided in particular that a muzzle <NUM> of the barrel <NUM> is arranged at the second barrel end <NUM>.

It may also be provided that the firearm <NUM> has a receiver or receiver part. The receiver may for example comprise an upper receiver <NUM> and/or a lower receiver <NUM>.

The present invention is described by way of example on the basis of a receiver with an upper receiver <NUM> and a lower receiver <NUM>. However, the barrel assembly <NUM> according to the invention is not restricted to this embodiment with a separate upper receiver <NUM> and lower receiver <NUM>, but may for example also be formed on a one-part receiver. In a further alternative, the barrel assembly may be formed on another receiver part.

The upper receiver <NUM> may be coupled to the barrel <NUM>. It may also be provided that the firearm <NUM> has a lower receiver <NUM>. It may be provided in particular that the barrel assembly <NUM> is pivotably or removably coupled to the lower receiver <NUM> by means of a swivel joint.

It may also be provided that a handguard <NUM>, which may be coupled to the receiver, is formed. It may additionally be provided that a clamping slide unit <NUM>, which is coupled to the upper receiver <NUM> or to the barrel <NUM>, is formed. It may additionally be provided that a breech block unit <NUM>, which is coupled to the lower receiver <NUM>, is formed. It may also be provided that a grip <NUM> is formed on the lower receiver <NUM>. It may additionally be provided that a magazine <NUM>, which can be incorporated in the lower receiver <NUM>, is formed. It may also be provided that a buttstock <NUM>, which is coupled to the lower receiver <NUM>, is formed. It may be provided in particular that a trigger unit <NUM> is formed in the lower receiver <NUM>.

<FIG> shows a first exemplary embodiment of a barrel assembly <NUM> in a perspective view.

As can be seen from <FIG>, it may be provided that the barrel assembly <NUM> comprises the barrel <NUM>. It may also be provided that the barrel <NUM> is coupled to the handguard <NUM>. The handguard <NUM> may be coupled to the upper receiver <NUM>. It may also be provided that the barrel assembly <NUM> comprises a clamping device <NUM>, which serves for the mounting of the barrel <NUM>. It may additionally be provided that a pivot bearing <NUM>, which serves for the pivotable attachment of the barrel assembly <NUM> to the lower receiver <NUM>, is formed on the clamping device <NUM>.

It may be provided in particular that the barrel assembly <NUM> is attached to the lower receiver <NUM> by means of a turning bolt that is not shown. It may also be provided that the turning bolt is removable, whereby the barrel assembly <NUM> can be removed from the lower receiver <NUM>.

In <FIG> and <FIG>, the first exemplary embodiment of the barrel assembly <NUM> is shown in the same view as in <FIG>, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In <FIG>, the barrel assembly <NUM> is shown in an exploded view. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>. For the sake of clarity, the handguard <NUM> and the upper receiver <NUM> are not shown in <FIG> and <FIG>. In <FIG> and <FIG>, the clamping device <NUM> is shown in two different positions.

As can be seen from <FIG>, it may be provided that the clamping device <NUM> has a first clamping jaw <NUM> and a second clamping jaw <NUM>. It may be provided in particular that the first clamping jaw <NUM> is arranged on a first side of the barrel <NUM>, in particular on a first side of a weapon median plane <NUM>. It may also be provided that the second clamping jaw <NUM> is arranged on a second side of the barrel <NUM>, in particular on a second side of the weapon median plane <NUM>.

It may additionally be provided that the first clamping jaw <NUM> and the second clamping jaw <NUM> can be clamped in relation to one another by means of an eccentric clamp <NUM>. It may be provided in particular that an eccentric clamp <NUM> is formed for the clamping of the first clamping jaw <NUM> and the second clamping jaw <NUM>. The eccentric clamp <NUM> may have a clamping lever <NUM>. The clamping lever <NUM> may be arranged on the first clamping jaw <NUM> pivotably with respect to a pivot axis <NUM> between a clamping position <NUM>, as shown in <FIG>, and a releasing position <NUM>, as shown in <FIG>.

It may be provided in particular that the pivot axis <NUM> is arranged vertically. It may also be provided that a butting surface <NUM>, which serves for the butting against an abutment <NUM>, is arranged on the clamping lever <NUM>.

As can also be seen from <FIG>, it may be provided that a clearance <NUM>, into which a clamping lever mount <NUM> of the first clamping jaw <NUM> reaches, is formed in the second clamping jaw <NUM>. The clamping lever mount <NUM> may serve here for the mounting of the clamping lever <NUM>.

It may be provided in particular that the clamping lever mount <NUM> of the first clamping jaw <NUM> reaches beyond the weapon median plane <NUM> into the second clamping jaw <NUM>.

It may also be provided that a slit <NUM>, by means of which the first clamping jaw <NUM> and the second clamping jaw <NUM> are separated from one another, is formed at least in some sections.

It may be provided in particular that a clamping lever bolt <NUM> is formed on the clamping lever mount <NUM> and that a clamping lever hole <NUM> is formed in the clamping lever <NUM>. The clamping lever hole <NUM> may serve for the fastening of the clamping lever <NUM> on the clamping lever bolt <NUM>. It may also be provided that a clamping-lever securing ring <NUM>, which serves for securing the clamping lever <NUM> on the clamping lever bolt <NUM>, is formed. Here, the clamping-lever securing ring <NUM> may be mounted on the clamping lever bolt <NUM>, in particular in a groove provided for it.

It may be provided in particular that the clamping lever hole <NUM> is cylindrically formed and that the pivot axis <NUM> forms a cylinder centre axis of the clamping lever hole <NUM>. The pivot axis <NUM> can consequently form at the same time the centre axis of the clamping lever bolt <NUM>. It may be provided in particular that a loose fit is formed between the clamping lever bolt <NUM> and the clamping lever hole <NUM>. The clamping lever bolt <NUM> and the clamping lever hole <NUM> can consequently form a sliding bearing. Because of small relative speeds and/or small relative movements, such a sliding bearing can also manage without sliding bearing materials and also manage without lubrication. As sliding partners, here the steel surfaces of the clamping lever bolt <NUM> and of the clamping lever hole <NUM> may slide on one another.

It may also be provided that a sliding bearing bush or a sliding bearing surface is arranged between the clamping lever bolt <NUM> and the clamping lever hole <NUM>. Incorporating the clamping lever hole <NUM> at the clamping lever bolt <NUM> allows the clamping lever <NUM> to be arranged on the clamping lever mount <NUM> pivotably about the pivot axis <NUM>.

It may also be provided that the abutment <NUM> is formed on a cover plate <NUM>, wherein the cover plate <NUM> is formed on the second clamping jaw <NUM>. Here, the cover plate <NUM> may be formed in one piece with the second clamping jaw <NUM>. It may be provided in particular that a butting block <NUM>, on which the abutment <NUM> is formed, is incorporated in the cover plate <NUM>.

It may be provided in particular that the cover plate <NUM> spans the clearance <NUM>, wherein the clamping lever mount <NUM> is arranged closer to the second clamping jaw <NUM> than the cover plate <NUM>. This measure can achieve the effect that, when there is an increase in the distance between the pivot axis <NUM> and the abutment <NUM> as a result of turning of the clamping lever <NUM>, the clamping lever mount <NUM> is drawn further into the clearance <NUM> of the second clamping jaw <NUM>. As a result, the distance between the first clamping jaw <NUM> and the second clamping jaw <NUM> can be reduced, whereby the first clamping jaw <NUM> and the second clamping jaw <NUM> can be clamped in relation to one another.

As can also be seen from <FIG>, it may be provided that the first clamping jaw <NUM> is delimited by a first outer delimiting plane <NUM> and that the second clamping jaw <NUM> is delimited by a second outer delimiting plane <NUM>. The first outer delimiting plane <NUM> and the second outer delimiting plane <NUM> may be formed here by external surfaces of the clamping device. It may be provided in particular that the first outer delimiting plane <NUM> and the second outer delimiting plane <NUM> are formed by the surfaces that serve for the mounting of the upper receiver <NUM> or against which the upper receiver <NUM> butts.

It may also be provided that shaped elements <NUM>, which serve for the form-fitting mounting of the upper receiver <NUM>, are arranged on the clamping device <NUM>. The shaped elements <NUM> may project with respect to the first outer delimiting plane <NUM> and the second outer delimiting plane <NUM>. Threaded holes may also be formed in the region of the shaped elements <NUM> or between the shaped elements <NUM>. By means of fastening means, which can be received in the threaded holes, the upper receiver <NUM> can consequently be fastened on the clamping device <NUM>.

As can be seen from <FIG>, it may be provided that the pivot axis <NUM> and the abutment <NUM> are arranged between the first outer delimiting plane <NUM> and the second outer delimiting plane <NUM>.

This provides a particularly space-saving construction, whereby the firearm <NUM> can have good functionality.

As can also be seen from <FIG>, it may be provided that a securing element <NUM> is arranged on the handguard <NUM> not depicted in <FIG>. The securing element <NUM> may be mounted or fastened in the handguard <NUM> for example by means of fastening means. It may be provided in particular that the securing element <NUM> is mounted on an inner side of the handguard <NUM>. In the assembled state of the firearm <NUM>, the securing element <NUM> can serve for securing the clamping lever <NUM> in the clamping position <NUM>.

It may also be provided that the butting surface <NUM> is formed eccentrically in relation to the pivot axis <NUM>. The butting of the butting surface <NUM> against the abutment <NUM> can achieve the effect that the clamping lever <NUM> is supported on the abutment <NUM>.

When there is a pivoting of the clamping lever <NUM> from the clamping position <NUM> into the releasing position <NUM>, the distance between the first clamping jaw <NUM> and the second clamping jaw <NUM> can be increased. This can be achieved by utilizing the elasticity of the clamping device <NUM> or of the upper receiver <NUM>.

A pivoting of the clamping lever <NUM> from the releasing position <NUM> into the clamping position <NUM> allows the distance from one another of the first clamping jaw <NUM> and the second clamping jaw <NUM> to be reduced. This can be achieved by the butting surface <NUM> being at a differing distance from the pivot axis <NUM> over the pivoting angle of the clamping lever <NUM>.

The clamping lever <NUM> may butt against the securing element <NUM>, so that the clamping lever <NUM> is secured in its clamping position <NUM> against turning into its releasing position <NUM>. The securing element <NUM> may additionally serve the purpose that, when the clamping lever <NUM> is not completely pivoted into its clamping position <NUM>, axial pushing of the handguard <NUM> onto the barrel <NUM> is not possible. This can be achieved by the securing element <NUM> that is arranged in the handguard <NUM> butting against the clamping lever <NUM>, and in this way blocking the pushing-on.

As can also be seen from <FIG>, it may be provided that the clamping device <NUM> does not act directly on the barrel <NUM>, but that a barrel extension <NUM>, in which the barrel <NUM> is mounted, is formed between the clamping device <NUM> and the barrel <NUM>. It may be provided in particular that a barrel mount <NUM>, in which the first barrel end <NUM> of the barrel <NUM> may be mounted, is formed in the barrel extension <NUM>.

It may be provided here that barrel lugs <NUM>, which serve for axially securing the barrel <NUM> in the barrel extension <NUM>, are formed at the first barrel end <NUM>. The barrel <NUM> may also be secured in the barrel extension <NUM> by additional securing elements.

It may be provided in particular that barrel locking lugs <NUM>, by means of which the breech block unit <NUM> can be locked in an axially secured manner in the barrel extension <NUM>, are formed in the barrel extension <NUM>.

It may also be provided that a first prism guide <NUM> is formed on the first side <NUM> of the barrel extension <NUM> and that a second prism guide <NUM> is formed on a second side <NUM> of the barrel extension <NUM>. The first prism guide <NUM> may correspond to a first counter guide <NUM> arranged in the first clamping jaw <NUM>. The second prism guide <NUM> may correspond to a second counter guide <NUM> arranged in the second clamping jaw <NUM>. It may be provided in particular that the first prism guide <NUM> and the second prism guide <NUM> are formed as a linear guide, by which the barrel <NUM> can be pushed into the barrel extension <NUM> in the axial direction of the barrel bore axis <NUM>.

As can also be seen from <FIG>, it may be provided that the barrel extension <NUM> has a barrel extension slit <NUM>. The barrel extension slit <NUM> may be arranged on an underside of the barrel extension <NUM>. It may be provided in particular that the barrel extension slit <NUM> extends over the complete longitudinal extent of the barrel extension <NUM>, so that the barrel extension <NUM> can be deformed by means of the first clamping jaw <NUM> and the second clamping jaw <NUM>, and consequently the barrel mount <NUM> of the barrel extension <NUM> can be pressed against the barrel <NUM> in order to be able to establish a frictional connection between the barrel <NUM> and the barrel mount <NUM>.

In a further embodiment variant that is not shown, it may also be provided that the functionality of the barrel extension <NUM> is formed directly in the barrel <NUM> and that the barrel extension <NUM> is not an independent component but is formed in one piece with the barrel <NUM>. Consequently, the barrel locking lugs <NUM> may be formed directly in the barrel <NUM>. Furthermore, the first clamping jaw <NUM> and the second clamping jaw <NUM> may lie directly against the barrel <NUM>, so that the barrel <NUM> is clamped directly by the clamping device <NUM>.

It should also be noted that the barrel assembly <NUM> according to the invention is not restricted to the firearm <NUM> described, with a barrel <NUM> and with a barrel extension <NUM> and a locked breech block, such as for example a breech with rotating bolt, but can also be readily transferred by a person skilled in the art to a firearm <NUM> with a different type of breech block, such as for example a blowback action, delayed blowback action, roller locking system etc., and the correspondingly designed barrel <NUM>.

In <FIG>, the first exemplary embodiment of the barrel assembly <NUM> is shown in a further perspective view, with a depicted securing element <NUM>, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>.

As can be seen particularly well from <FIG>, it may be provided that a locking lug <NUM> is formed on the clamping lever <NUM>. The locking lug <NUM> may be formed in such a way that the clamping lever <NUM> can only be transferred into the clamping position <NUM> when the barrel extension <NUM> has been pushed far enough into the clamping device <NUM> in the axial direction.

It may also be provided that a locking lug counterpart <NUM> is formed on the barrel extension <NUM>. Here, the locking lug <NUM> may interact in a form-fitting manner with the locking lug counterpart <NUM>.

<FIG> shows the barrel assembly <NUM> together with the upper receiver <NUM> and the handguard <NUM> in a sectional representation according to the sectional line VIII - VIII from <FIG>, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>.

As can be seen from <FIG>, it may be provided that the upper receiver <NUM> spans the clamping device <NUM> in a U-shaped manner. It may be provided here in particular that the upper receiver <NUM> has a first leg <NUM>, a second leg <NUM> and an upper-receiver base <NUM>. The first clamping jaw <NUM> may be fastened on the first leg <NUM> of the upper receiver <NUM>. The second clamping jaw <NUM> may be fastened on the second leg <NUM> of the upper receiver <NUM>. It may be provided in particular that the clamping jaws <NUM>, <NUM> are respectively screwed to the legs <NUM>, <NUM> of the upper receiver <NUM> by means of fastening means in the form of screws.

As can also be seen from <FIG>, it may be provided that the abutment <NUM> is arranged at an abutment distance <NUM> from the weapon median plane <NUM>. It may also be provided that the pivot axis <NUM> is arranged at a clamping-lever mount distance <NUM> from the weapon median plane <NUM>.

The abutment distance <NUM> and the clamping-lever mount distance <NUM> are measured here as a horizontal distance.

Seen in the present cross section according to <FIG>, the pivot axis <NUM> may lie between the second outer delimiting plane <NUM> and the barrel bore axis <NUM>. The abutment <NUM> may lie between the first outer delimiting plane <NUM> and the barrel bore axis <NUM>.

In other words, the abutment <NUM> may be arranged on a first side of the weapon median plane <NUM> and the pivot axis <NUM> may be arranged on a second side of the weapon median plane <NUM>.

In <FIG>, a further, second embodiment of the barrel assembly <NUM>, which may be independent in itself, is shown, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>.

As can be seen from <FIG>, it may be provided that the abutment <NUM> is arranged on its own abutment component <NUM>, which is coupled to the second clamping jaw <NUM>.

It may be provided in particular that a first abutment fastening <NUM> is formed on a first longitudinal side <NUM> of the clearance <NUM>. It may also be provided that a second abutment fastening <NUM> is formed on a second longitudinal side <NUM> of the clearance <NUM>. The first abutment fastening <NUM> may comprise a first bolt <NUM>. The second abutment fastening <NUM> may comprise a second bolt <NUM>. It may also be provided that in the abutment component <NUM> there is formed a first hole <NUM> and there is formed a second hole <NUM>. The first hole <NUM> may be incorporated in the first bolt <NUM>. The second hole <NUM> may be incorporated in the second bolt <NUM>. It may also be provided that a first securing ring <NUM>, which is arranged on the first bolt <NUM> in a corresponding groove and serves for securing the abutment component <NUM>, is formed. It may also be provided that a second securing ring <NUM>, which is arranged in a groove on the second bolt <NUM> and serves for securing the abutment component <NUM>, is formed.

As can be seen particularly well from <FIG>, it may be provided that the clamping device <NUM> is formed as one part, wherein the first clamping jaw <NUM> and the second clamping jaw <NUM> are coupled to one another by means of a base <NUM>. It may also be provided that the slit <NUM> is formed between the first clamping jaw <NUM> and the second clamping jaw <NUM>. It may additionally be provided that a transverse slit <NUM>, which extends between the first clamping jaw <NUM> and/or the second clamping jaw <NUM> and the base <NUM>, is formed. The transverse slit <NUM> may adjoin the slit <NUM> in a T-shaped form.

It may also be provided that an axial stop <NUM>, which serves for the axial positioning of the barrel extension <NUM> in relation to the clamping device <NUM>, is formed on the barrel extension <NUM>. It may be provided in particular that the barrel extension <NUM> butts against the clamping device <NUM> in the axial direction by means of the axial stop <NUM>, and is consequently positioned in relation to the barrel extension <NUM> in the axial direction.

<FIG> shows the second exemplary embodiment of the barrel assembly <NUM> together with the upper receiver <NUM> and the handguard <NUM> in a sectional representation analogous to <FIG>, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>.

The inserting and clamping of the barrel <NUM> are described on the basis of joint consideration of <FIG>.

In a first step, the barrel <NUM> may be inserted into the barrel extension <NUM>, if these are two different components. In one embodiment it is of course conceivable that the barrel <NUM> already has the features of the barrel extension <NUM> or that the barrel <NUM> and the barrel extension <NUM> are already connected to one another securely and acting as one part.

In a further step, the barrel <NUM> together with the barrel extension <NUM> may be pushed in between the first clamping jaw <NUM> and the second clamping jaw <NUM> of the clamping device <NUM>, wherein the first prism guide <NUM> and the second prism guide <NUM> can serve for guiding the barrel <NUM> and/or the barrel extension <NUM>. Here, the locking lever <NUM> is in its releasing position <NUM>, in order to make it possible for the barrel to be inserted.

Here, the barrel <NUM> can be pushed into the clamping device <NUM> until the axial stop <NUM> of the barrel extension <NUM> butts against the clamping device <NUM>, and consequently the axial position of the barrel <NUM> is defined.

For fixing the barrel <NUM>, the clamping lever <NUM> may be pivoted about the pivot axis <NUM> from the releasing position <NUM> into the clamping position <NUM>. The butting surface <NUM> of the clamping lever <NUM> thereby slides on the abutment <NUM>. The fact that the butting surface <NUM> is arranged eccentrically in relation to the pivot axis <NUM> has the effect that a displacement of the pivot axis <NUM> can be achieved by the pivoting. The construction according to the invention of the first clamping jaw <NUM> and the second clamping jaw <NUM> has the effect that the first clamping jaw <NUM> and the second clamping jaw <NUM> are in this case pulled towards one another, whereby the barrel <NUM> and/or the barrel extension <NUM> are clamped between the first clamping jaw <NUM> and the second clamping jaw <NUM>.

Here, the clamping lever <NUM> can only be pivoted when the barrel <NUM> and/or the barrel extension <NUM> are correctly positioned, so that the locking lug <NUM> arranged on the clamping lever <NUM> along with the locking lug counterpart <NUM> can be displaced in one another.

Subsequently, the handguard <NUM> can be pushed onto the firearm <NUM>, wherein the securing element <NUM> in the handguard <NUM> can secure the clamping lever <NUM> in a form-fitting manner against opening.

Removal of the barrel <NUM> can be performed in the reverse sequence.

<FIG> show the third exemplary embodiment of the barrel assembly <NUM>, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>.

The third exemplary embodiment of the barrel assembly <NUM> is described on the basis of joint consideration of <FIG>. For the sake of clarity, the handguard <NUM> and the upper receiver <NUM> are not shown in <FIG>.

It may also be provided that a slit <NUM>, by means of which the first clamping jaw <NUM> and the second clamping jaw <NUM> are separated from one another, is formed at least in some sections. In the exemplary embodiment shown, the slit <NUM> extends over the complete length of the clamping device <NUM>.

As can also be seen from <FIG>, it may be provided that the first clamping jaw <NUM> is delimited by a first outer delimiting plane <NUM> and that the second clamping jaw <NUM> is delimited by a second outer delimiting plane <NUM>. The first outer delimiting plane <NUM> and the second outer delimiting plane <NUM> may be formed here by external surfaces of the clamping device <NUM>. It may be provided in particular that the first outer delimiting plane <NUM> and the second outer delimiting plane <NUM> are formed by the surfaces that serve for the mounting of the upper receiver <NUM> or against which the upper receiver <NUM> butts.

As can be seen from <FIG>, it may be provided that the pivot axis <NUM> and the abutment <NUM> are arranged between the first outer delimiting plane <NUM> and the second outer delimiting plane <NUM>. This provides a particularly space-saving construction, whereby the firearm <NUM> can have good functionality.

As can be seen from <FIG>, it may be provided that the clamping device <NUM> has a sleeve segment <NUM>, wherein the first clamping jaw <NUM> and the second clamping jaw <NUM> are coupled as one part to the sleeve segment <NUM>.

It may be provided in particular that the sleeve segment <NUM> together with the first clamping jaw <NUM> and the second clamping jaw <NUM> form an inner clamping surface <NUM>. The inner clamping surface <NUM> may substantially take the form of a cylinder segment, wherein the first clamping jaw <NUM> and the second clamping jaw <NUM> are designed for deforming the inner clamping surface <NUM>.

It may be provided in particular that the sleeve segment <NUM> together with the first clamping jaw <NUM> and the second clamping jaw <NUM> enclose the barrel extension <NUM>. By means of the clamping device <NUM>, the inner clamping surface <NUM> can be pressed against the barrel extension <NUM>.

As can also be seen from <FIG>, it may be provided that the barrel extension <NUM> has a barrel extension slit <NUM>. The barrel extension slit <NUM> may be arranged on an underside of the barrel extension <NUM>. It may be provided in particular that the barrel extension slit <NUM> extends only over part of the longitudinal extent of the barrel extension <NUM>, so that the barrel extension <NUM> can be deformed by means of the first clamping jaw <NUM> and the second clamping jaw <NUM>, and consequently the barrel mount <NUM> of the barrel extension <NUM> can be pressed against the barrel <NUM> in order to be able to establish a frictional connection between the barrel <NUM> and the barrel mount <NUM>. In other words, the barrel <NUM> can be clamped in the barrel mount <NUM> of the barrel extension <NUM> by means of the clamping device <NUM>, by the barrel extension <NUM> being deformed at least in some sections.

<FIG> shows the barrel assembly <NUM> in a sectional representation according to the sectional line XVI-XVI from <FIG>.

Seen in the present cross section according to <FIG>, the pivot axis <NUM> may lie between the first outer delimiting plane <NUM> and the barrel bore axis <NUM>. The abutment <NUM> may likewise lie between the first outer delimiting plane <NUM> and the barrel bore axis <NUM>.

It may also be provided that one or more material cutouts <NUM> are formed in the sleeve segment <NUM>. The material cutouts <NUM> may for example take the form of holes or the form of perforations. The material cutouts <NUM> may be arranged on both sides of the sleeve segment <NUM>.

The cross-sectional representation according to <FIG> shows a section exactly in the region of such a material cutout <NUM>. This makes it look optically as though the sleeve segment <NUM> would not completely clasp the barrel extension <NUM>.

As can be seen particularly well from <FIG>, it may be provided that the abutment <NUM> is arranged on its own abutment component <NUM>, which is coupled to the second clamping jaw <NUM>.

It may be provided in particular that a first abutment fastening <NUM> is formed on a first longitudinal side <NUM> of the clearance <NUM>. It may also be provided that a second abutment fastening <NUM> is formed on a second longitudinal side <NUM> of the clearance <NUM>. The first abutment fastening <NUM> may comprise a first bolt <NUM>. The second abutment fastening <NUM> may comprise a second bolt <NUM>.

It may also be provided that in the abutment component <NUM> there is formed a first hole <NUM> and there is formed a second hole <NUM>. The first hole <NUM> may be incorporated in the first bolt <NUM>. The second hole <NUM> may be incorporated in the second bolt <NUM>. It may be provided in particular that the first hole <NUM> takes the form of a slot which extends in a transverse direction in relation to the barrel bore axis <NUM> and that the second hole <NUM> takes the form of a slot which extends parallel to the longitudinal extent of a barrel bore axis <NUM>.

It may also be provided that an adjusting-screw threaded hole <NUM> that leads into the first hole <NUM> is formed in the abutment component <NUM>. There may be an adjusting screw <NUM> screwed into the adjusting-screw threaded hole <NUM>, wherein the adjusting screw <NUM> lies against the first bolt <NUM> directly or by means of an interposed transmission element <NUM> and wherein the adjusting screw <NUM> is designed for adjusting the position of the abutment <NUM>.

It may also be provided that a securing hole <NUM> that leads into the adjusting-screw threaded hole <NUM> is formed in the abutment component <NUM>, while held in the securing hole <NUM> there is a securing screw <NUM> which clamps the adjusting screw <NUM>. By turning the adjusting screw <NUM>, the position of the abutment <NUM> can be set, whereby the clamping force of the clamping device <NUM> in the clamping position <NUM> can be set. In particular, the first hole <NUM> can thereby be positioned in a transverse direction of the firearm <NUM> in relation to the first bolt <NUM>.

It may also be provided that a first securing ring <NUM>, which is arranged on the first bolt <NUM> in a corresponding groove and serves for securing the abutment component <NUM>, is formed. It may also be provided that a second securing ring, which is arranged in a groove on the second bolt <NUM> and serves for securing the abutment component <NUM>, is formed. The second securing ring is not shown in <FIG> for reasons of clarity.

As can also be seen from <FIG>, it may be provided that a clamping lever bolt <NUM> is formed on the clamping lever mount <NUM> and that a clamping lever hole <NUM> is formed in the clamping lever <NUM>. The clamping lever hole <NUM> may serve for the fastening of the clamping lever <NUM> on the clamping lever bolt <NUM>. It may also be provided that a clamping-lever securing ring <NUM>, which serves for securing the clamping lever <NUM> on the clamping lever bolt <NUM>, is formed. Here, the clamping-lever securing ring <NUM> may be mounted on the clamping lever bolt <NUM>, in particular in a groove provided for it.

The adjustability of the abutment component <NUM>, as it is shown in detail in <FIG>, may be applied to all other exemplary embodiments described in this document.

As can be seen from <FIG>, it may be provided that a force transmission component <NUM> is formed. The force transmission component <NUM> may be mounted on the sleeve segment <NUM> and supported on the upper receiver <NUM>. It may be provided in particular that formed on the sleeve segment <NUM> there is a force-transmission component mount <NUM>, which serves for the mounting of the force transmission component <NUM>. It may be provided in particular that the force transmission component <NUM> is fastened on the force-transmission component mount <NUM> by means of a fastening screw <NUM>.

It may also be provided that the force transmission component <NUM> has a force transmission projection <NUM>, wherein the force transmission projection <NUM> is supported on the barrel extension <NUM>.

It may also be provided that formed in the barrel extension <NUM> is a shaped recess <NUM>, which matches the force transmission projection <NUM>. This allows a longitudinal stop <NUM> and consequently a linear positioning of the barrel extension <NUM> in relation to the clamping device <NUM> to be achieved.

In <FIG>, a further, and possibly itself independent, fourth embodiment of the barrel assembly <NUM> is shown, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>. The clamping device <NUM> here may likewise have a construction with a sleeve segment <NUM>, such as that described in detail in <FIG>. For reasons of simplicity, an exact repetition of this description is therefore not given.

As can be seen particularly well from <FIG>, it may be provided that the clamping device <NUM> is formed as closed in the rear region in the form of a sleeve, wherein the first clamping jaw <NUM> and the second clamping jaw <NUM> are coupled to one another by means of a base <NUM>. It may also be provided that the slit <NUM> is formed between the first clamping jaw <NUM> and the second clamping jaw <NUM>. It may additionally be provided that a transverse slit <NUM>, which extends between the first clamping jaw <NUM> and/or the second clamping jaw <NUM> and the base <NUM>, is formed. The transverse slit <NUM> may adjoin the slit <NUM> in a T-shaped form.

In the exemplary embodiment according to <FIG>, a barrel extension <NUM> may likewise be provided, as already described in the exemplary embodiment according to <FIG>.

In <FIG> and <FIG>, a further, and possibly itself independent, fifth embodiment of the barrel assembly <NUM> is shown, with the same reference numerals or component designations as in the preceding <FIG> being used again for the same parts. In order to avoid unnecessary repetitions, reference is made to the detailed description in the preceding <FIG>. The clamping device <NUM> may here likewise have a construction with a sleeve segment <NUM>, such as that described in detail in <FIG>. For reasons of simplicity, an exact repetition of this description is therefore not given.

As can be seen from <FIG> and <FIG>, it may be provided that the functions of the barrel extension <NUM> are integrated directly in the clamping device <NUM>. It may consequently be provided that a barrel mount <NUM>, in which the first barrel end <NUM> of the barrel <NUM> may be mounted, is formed in the clamping device <NUM>, in particular on the base <NUM>.

It may be provided here in particular that barrel lugs <NUM>, which serve for axially securing the barrel <NUM> directly in the clamping device <NUM>, are formed at the first barrel end <NUM>. It may also be provided that barrel locking lugs <NUM> are formed in the base <NUM> of the clamping device <NUM>.

The clamping of the barrel <NUM> may take place in the further exemplary embodiments according to <FIG> mutatis mutandis in a way such as that described already in connection with <FIG>.

The exemplary embodiments show possible embodiment variants, it being noted at this stage that the invention is not restricted to the embodiment variants thereof specifically represented, but rather that various combinations of the individual embodiment variants with one another are also possible and, on the basis of the teaching for technical action provided by the present invention, this possibility of variation is within the ability of a person skilled in the art working in this technical field.

The scope of protection is determined by the claims. However, the description and the drawings should be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions per se. The object on which the independent inventive solutions are based can be found in the description.

All of the indications of ranges of values in the present description should be understood as meaning that they include any and all subranges thereof; for example, the indication <NUM> to <NUM> should be understood as meaning that all of the subranges on the basis of the lower limit <NUM> and the upper limit <NUM> are included, i.e. all of the subranges begin with a lower limit of <NUM> or greater and end with an upper limit of <NUM> or less, for example <NUM> to <NUM>, or <NUM> to <NUM>, or <NUM> to <NUM>.

For the sake of good order, it should finally be pointed out that, for better understanding of the construction, elements have sometimes been represented not to scale and/or enlarged and/or reduced in size.

Claim 1:
Barrel assembly (<NUM>) for a firearm (<NUM>), the barrel assembly (<NUM>) comprising:
- a barrel (<NUM>) with a first barrel end (<NUM>), in the longitudinal extent of a barrel bore axis (<NUM>);
- a clamping device (<NUM>) for clamping the barrel (<NUM>), wherein the clamping device (<NUM>) has a first clamping jaw (<NUM>) and a second clamping jaw (<NUM>);
- an eccentric clamp (<NUM>) with a clamping lever (<NUM>) for clamping the first clamping jaw (<NUM>) and the second clamping jaw (<NUM>) in relation to one another, wherein the clamping lever (<NUM>) has a pivot axis (<NUM>) and a butting surface (<NUM>), wherein the butting surface (<NUM>) is formed eccentrically in relation to the pivot axis (<NUM>), wherein the clamping lever (<NUM>) is pivotable with respect to the pivot axis (<NUM>) between a clamping position (<NUM>) and a releasing position (<NUM>),
characterized in that
a clearance (<NUM>) is formed in the second clamping jaw (<NUM>), and in that the first clamping jaw (<NUM>) has a clamping lever mount (<NUM>), wherein the clamping lever mount (<NUM>) reaches into the clearance (<NUM>), wherein the clamping lever (<NUM>) is mounted pivotably about the pivot axis (<NUM>) on the clamping lever mount (<NUM>) of the first clamping jaw (<NUM>) and wherein the second clamping jaw (<NUM>) has an abutment (<NUM>) for the butting of the butting surface (<NUM>), wherein the abutment (<NUM>) lies closer to a side of the second clamping jaw (<NUM>) than the pivot axis (<NUM>).