Patent Publication Number: US-10760868-B2

Title: Weighted replica firearm

Description:
RELATED APPLICATION 
     This application claims the benefit of U.S. Provisional Application Ser. No. 62/424,091, filed Nov. 18, 2016, entitled WEIGHTED REPLICA FIREARM, which is hereby incorporated in its entirety by reference herein. 
    
    
     BACKGROUND 
     1. Field 
     The present invention relates generally to firearms and firearm training equipment. More specifically, embodiments of the present invention concern a weighted replica firearm configured for simulated firearm training. 
     2. Discussion of Prior Art 
     Conventional firearms, in various forms such as a handgun, rifle, or shotgun, include a number of well-known components, such as a receiver, firing mechanism, grip, and barrel. These components are constructed to facilitate the efficient and accurate use of the firearm. These components are also configured to minimize the weight and bulk associated with the firearm. Firearm users, such as law enforcement and military personnel, frequently train with a firearm to become familiar with the firearm, to enhance personal fitness, and to become accustomed to using the firearm in particular situations. 
     Prior art firearms have a number of deficiencies, particularly for fitness training and simulated training. For instance, known firearms are not operable to be customized for a range of cardiovascular and resistance training purposes. For example, known firearms lack the ability to customize weight distribution along the firearm, e.g., to provide an unusual or otherwise enhanced fitness challenge to the user. 
     SUMMARY 
     The following brief summary is provided to indicate the nature of the subject matter disclosed herein. While certain aspects of the present invention are described below, the summary is not intended to limit the scope of the present invention. 
     Embodiments of the present invention provide a weighted replica firearm that does not suffer from the problems and limitations of the prior art devices, including but not limited to those noted above. 
     A first aspect of the present invention concerns a weighted replica firearm operable to be handled by a user for simulated firearm training. The weighted replica firearm broadly includes a firearm receiver, a barrel weight support, and a plurality of removable barrel weights. The receiver is configured to be grasped by the user. The barrel weight support is associated with the firearm receiver. The barrel weight support includes a support connection interface. The barrel weights are selectively mounted to the barrel weight support. Each of the barrel weights includes a corresponding weight connection interface removably interconnecting with the support connection interface when the barrel weight is mounted to the barrel weight support. 
     This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Other aspects and advantages of the present invention will be apparent from the following detailed description of the embodiments and the accompanying drawing figures. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
       Preferred embodiments of the invention are described in detail below with reference to the attached drawing figures, wherein: 
         FIG. 1  is a perspective of a weighted replica firearm constructed in accordance with a first preferred embodiment of the present invention, with the firearm including a receiver, stock, strap, magazine, barrel weight support, and barrel weights, with the barrel weight support and barrel weights cooperatively forming a replicated barrel; 
         FIG. 2  is a perspective of the weighted replica firearm shown in  FIG. 1 , showing a user grasping the strap of the firearm while performing a seated row exercise; 
         FIG. 3  is a perspective of the weighted replica firearm shown in  FIGS. 1 and 2 , showing the user holding the firearm while performing a bench press exercise; 
         FIG. 4  is an exploded perspective view of the weighted replica firearm shown in  FIGS. 1-3 ; 
         FIG. 5  is an enlarged fragmentary perspective view of the weighted replica firearm shown in  FIGS. 1-4 , which is partially sectioned to depict the preferred manner for attaching each of the barrel weights to the barrel weight support with a threaded fastener; 
         FIG. 6  is a perspective of a weighted replica firearm constructed in accordance with a second preferred embodiment of the present invention, with the firearm including a receiver, stock, scope, barrel weight support, and a removable barrel weight, with the barrel weight support and barrel weight cooperatively forming a replicated barrel; 
         FIG. 7  is an exploded perspective view of the weighted replica firearm shown in  FIG. 6 , showing the barrel weight detached from the barrel weight support, the stock detached from the receiver, and the scope detached from the receiver; 
         FIG. 8 a    is a perspective of an alternative stock that is interchangeable with the stock depicted in  FIGS. 6 and 7 ; 
         FIG. 8 b    is a perspective of an alternative scope that is interchangeable with the scope depicted in  FIGS. 6 and 7 ; 
         FIGS. 8 c  and 8 d    are perspectives of alternative barrel weights that are interchangeable with the barrel weight depicted in  FIGS. 6 and 7 ; 
         FIG. 9  is a perspective of a weighted replica firearm constructed in accordance with a third preferred embodiment of the present invention, with the firearm including a receiver, stock, barrel weight support, and removable barrel weights, with the barrel weight support and barrel weights cooperatively forming a replicated barrel; 
         FIG. 10  is an exploded perspective view of the weighted replica firearm shown in  FIG. 9 , showing both the barrel weight support and the stock detached from the receiver; 
         FIG. 11 a    is a perspective of an alternative stock that is interchangeable with the stock depicted in  FIGS. 6 and 7 ; 
         FIG. 11 b    is a fragmentary perspective of the replicated barrel shown in  FIGS. 9 and 10 , which is partially section to show the barrel weights slidably received by a bore of the barrel weight support; 
         FIG. 12  is an exploded perspective of a weighted replica firearm constructed in accordance with a fourth preferred embodiment of the present invention, with the firearm including a receiver, magazine, barrel weight support, and removable barrel weight, with the barrel weight support and barrel weight cooperatively forming a replicated barrel; 
         FIG. 13  is a perspective of an alternative barrel weight that is interchangeable with the barrel weight depicted in  FIG. 12 ; 
         FIGS. 14 a  and 14 b    are perspectives of alternative magazines that are interchangeable with the magazine depicted in  FIG. 12 ; 
         FIG. 15  is an exploded perspective of a weighted replica firearm constructed in accordance with a fifth preferred embodiment of the present invention, with the firearm including a receiver, barrel weight support, and removable barrel weight, with the barrel weight support and barrel weight cooperatively forming a replicated barrel; and 
         FIGS. 16 a  and 16 b    are perspectives of alternative barrel weights that are interchangeable with the barrel weight depicted in  FIG. 15 . 
     
    
    
     The drawing figures do not limit the present invention to the specific embodiments disclosed and described herein. The drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the preferred embodiment. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring initially to  FIGS. 1-5 , a weighted replica firearm  20  is preferably configured for simulated firearm training. The depicted replica firearm  20  is dimensioned and configured to simulate an automatic rifle for various exercises, such as stretching, cardiovascular training, and weight training. The replica firearm  20  and exercises can be tailored as part of a training regimen for military personnel, federal agents, state and local law enforcement, and others who frequently use firearms. Although the illustrated firearm  20  is preferred, weighted replica firearms can be variously configured within the ambit of the present invention and some preferred alternatives are depicted in subsequent embodiments. 
     The replica firearm  20  preferably includes a receiver  22 , stock  24 , strap  26 , magazine  28 , barrel weight support  30 , and barrel weights  32 . As will be discussed, the firearm  20  is preferably configured to simulate the look and feel of a working firearm. At the same time, the depicted firearm  20  includes various weights that are selectively attached to preferably provide a balanced distribution of weight along the firearm  20  (although the user could attach the weights in a relatively imbalanced configuration, e.g., to provide a more demanding exercise routine). While the firearm  20  includes weights that are configured to make the firearm  20  heavier than an equivalent working firearm, such weights can also be configured to provide the firearm  20  with a different overall weight (e.g., where the firearm has the same weight as the equivalent working firearm or is lighter than the equivalent firearm). 
     The receiver  22  includes a replica firearm frame operable to support other components of the firearm  20 . The depicted receiver  22  preferably includes a proximal stock connector  34  and a distal barrel connector  36  (see  FIG. 4 ). In the illustrated embodiment, the proximal stock connector  34  and distal barrel connector  36  define respective proximal and distal receiver ends of the receiver  22  (although one or both of the connectors  34 , 36  could be spaced from the respective receiver ends). 
     The proximal stock connector  34  preferably includes a shaft that slidably receives the stock  24 . The stock connector  34  also includes a threaded female connection interface  38  (see  FIG. 4 ). As will be discussed, the threaded connection interface  38  is configured to be removably attached to a threaded connection end of the stock  24  to provide a detachable threaded connection. 
     The distal barrel connector  36  also provides a threaded female connection interface  40  (see  FIG. 4 ). As described below, the threaded connection interface  40  of the distal barrel connector  36  is configured to be removably attached to a threaded connection end of the barrel weight support  30 . 
     The depicted receiver  22  also preferably includes a magazine connector  42  located between the proximal stock connector  34  and the distal barrel connector  36 . The magazine connector  42  presents a magazine slot  44  to slidably receive the magazine  28  (see  FIG. 4 ). 
     The magazine  28  is preferably grasped by a user and removably attached to the receiver  22 . The magazine  28  may include at least part of a working ammunition magazine, an unfinished ammunition magazine, or a replica ammunition magazine. 
     The magazine  28  preferably comprises a unitary body and includes a connection end  46  (see  FIG. 4 ) that is removably attachable to the magazine connector  42 . 
     The connection end  46  of the magazine  28  is configured to be removably inserted within the magazine slot  44  and attached to the magazine connector  42  via a detachable connection mechanism (not shown). For instance, the magazine connector  42  and magazine  28  can include complemental detent elements that cooperatively provide the connection mechanism. 
     In preferred embodiments, the magazine  28  is preferably configured to add weight to the firearm  20  while simulating the look and feel of a working firearm. Any such weighted structure is configured to add weight to the firearm  20  while preferably providing a balanced distribution of weight particularly along the length of the firearm  20 . 
     The receiver  22  further includes a firearm grip  48  adjacent to the magazine connector  42  and operable to be grasped by a user. The grip  48  is preferably located between the proximal and distal ends of the receiver  22 . Thus, the illustrated grip  48  is preferably located distally of the stock  24  and proximally of the magazine  28  and the barrel weights  32 . The location of the grip  48  permits the gravitational forces of the stock  24  (including weighted inserts associated with the stock  24 ) and the barrel weights  32  to at least partly counterbalance one another. 
     Yet further, the receiver  22  preferably presents a mounting bracket  50  associated with an upper margin  52  of the receiver  22  (see  FIGS. 1 and 4 ). The bracket  50  is preferably integrally formed with the rest of the receiver  22 . In the depicted embodiment, the bracket  50  preferably comprises a mounting rail with a series of transverse slots  54  (see  FIG. 4 ). Most preferably, the depicted bracket  50  comprises a so-called “Picatinny” rail, although the bracket  50  could take other forms without departing from the scope of the present invention. While the bracket  50  is integrally formed as part of the receiver  22 , it will be appreciated that the bracket could be removably mounted to another part of the receiver (e.g., with threaded fasteners). 
     The bracket  50  is configured to permit removable attachment of one or more types of items to the upper margin  52  of the receiver  22 . For instance, as depicted in subsequent embodiments, a firearm scope (i.e., an optical telescopic sight) can be configured for attachment to the bracket  50  of the firearm  20 . It will be appreciated that any scope structure, or any other weighted structure, attached to the bracket  50  could include a replica scope or a working scope. 
     In preferred embodiments, a scope or other weighted structure attached to the bracket  50  is preferably configured to simulate the look and feel of a working firearm. Any such weighted structure is configured to add weight to the firearm  20  while preferably providing a balanced distribution of weight, particularly along the length of the firearm  20 . 
     The depicted receiver  22  includes a replica frame or housing structure that is intended to mimic a working receiver. The illustrated receiver  22  also includes features that generally mimic other firearm elements associated with a working firearm (such as the bolt, trigger, hammer, safety, and other movable firing components) and operably mounted within, on, or adjacent to a working receiver. 
     However, the receiver  22  could be alternatively configured to include at least part of a working firearm receiver frame or an unfinished firearm receiver frame. Yet further, the receiver  22  could include other unfinished or working components that are formed separately from a receiver frame (whether the frame is a replica, unfinished, or working frame). For instance, the receiver  22  could include a bolt, trigger, hammer, safety, and/or other movable firing components that are separately formed and provided in replica form, unfinished form, or working form. 
     The receiver  22  is configured to be grasped by the user and preferably defines a distal simulated firing direction F. In the depicted embodiment, the arrangement of the grip  48  and trigger (among other features presented by the receiver  22 ) cooperatively define the firing direction F. 
     The stock  24  comprises a structure that can be grasped by a user and can be abutted against the user when using the firearm  20 . The stock  24  can include at least part of a working stock, an unfinished stock, or a replica stock. 
     The stock  24  preferably includes a body  56 , a removable butt plate  58 , and removable weighted inserts  60   a,b  (see  FIGS. 1 and 4 ). The body  56  is unitary and includes a distal threaded connection end  62  (see  FIG. 4 ). The connection end  62  is operable to be threadably attached to the proximal stock connector  34  of the receiver  22 . The body  56  also presents a proximal butt end  64  to receive the butt plate  58 . The stock  24  includes a strap connector  66  attached adjacent to the butt end  64 . 
     The body  56  further presents chambers  68  that extend distally from the butt end  64  (see  FIG. 1 ). The chambers  68  permit the inserts  60   a,b  to be slidably inserted into (and removed from) the body  56 . The butt plate  58  is removably attached to the butt end  64  with fasteners to enclose the chambers  68  and restrict removal of the inserts  60   a,b.    
     However, the stock  24  could have an alternative adjustable weight arrangement without departing from the spirit of the present invention. For instance, the stock  24  could include one or more chambers configured to removably receive a ballast material, such as a granular material (e.g., sand or metal granules) or a liquid. 
     As with the receiver  22 , the addition of weights or other weighted structure to the stock  24  is preferably configured to simulate the look and feel of a working firearm. Any such weighted structure is also configured to add weight to the firearm  20  while preferably providing a balanced distribution of weight, particularly along the length of the firearm  20 . 
     The illustrated strap  26  mimics the size and shape of a conventional rifle strap. The strap  26  includes an elastic band  70 , a fabric sleeve  72  slidably received on the band  70 , and connector rings  74  (see  FIGS. 1 and 2 ). 
     The elastic band  70  is unitary and includes an elastomeric material. The band  70  presents opposite ends that are fixed to corresponding rings  74 . A distal one of the rings  74  is removably attached to one of the weights  32  with a threaded fastener  76  (see  FIG. 1 ). 
     By having an elastic strap construction, the firearm  20  is configured to be used for certain stretching exercises and resistance training exercises. For instance, the user can perform seated rows with the firearm  20  by grasping the strap  26  and holding the rest of the firearm below the user&#39;s feet (see  FIG. 2 ). 
     The barrel weight support  30  is provided to receive one or more barrel weights  32 . The addition of one or more of the weights  32  (or other weighted structure) to the support  30  is preferably configured so that the support  30  and weights  32  cooperatively provide a replicated barrel  78  (see  FIG. 1 ). That is, the support  30  and weights  32  cooperatively mimic the look and feel of a working firearm barrel. Furthermore, the weights  32  are preferably configured and received on the support  30  to provide a balanced distribution of weight along the length of the replicated barrel  78 . 
     The depicted support  30  includes a unitary elongated beam  80  and a threaded proximal connector  82  that are integrally formed with one another (see  FIG. 4 ). The support  30  also presents proximal and distal ends  84   a,b.    
     The beam  80  has a generally square cross section that is substantially continuous along the length of the beam  80 . The beam  80  also preferably presents a continuous outermost barrel surface  86  (see  FIG. 4 ). The surface  86  provides a support connection interface that slidably receives one or more weights  32 . The connector  82  preferably extends transversely beyond the surface  86  to provide a stop that is sized to restrict a weight  32  from sliding off of the proximal end  84   a.    
     The support  30  further presents a series of threaded blind holes  88  spaced along the length of the beam  80 . Each hole  88  is configured to threadably receive the threaded fastener  76  to secure one or more weights  32  on the support  30  (see  FIG. 5 ). The threaded fastener  76  preferably comprises a cap screw with a head that presents a slotted opening  90  (see  FIG. 5 ) to receive one of the rings  74 . 
     The beam  80  preferably presents a support length dimension D 1  (see  FIG. 4 ) that is sized to receive weights  32  so that the support  30  and weights  32  cooperatively mimic a working barrel. It will be appreciated that an alternative support could present a length shorter than the depicted embodiment or longer than the depicted embodiment (as suggested by the dashed lines in  FIG. 4 , which depict an extension of the support at the distal end thereof). The support length dimension D 1  preferably ranges from about six inches (6″) to about forty-eight inches (48″). 
     Turning to  FIGS. 1, 4, and 5 , one or more of the barrel weights  32  can be selectively mounted on the support  30  for various training routines. As will be described, the weights  32  can be mounted on the support  30  in various combinations and are preferably interchangeable with one another. As will also be described, the support  30  and weights  32  are used in combination to provide the replicated barrel  78 , while preferably providing a balanced distribution of weight along the length of the replicated barrel  78 . 
     The depicted weights  32  each preferably include a unitary tubular body  92  and a plurality of mounting brackets  94 . The illustrated body  92  presents a longitudinal bore  96  with a square cross-sectional shape. The bore  96  is sized to slidably receive the beam  80  and defines a weight connection interface. Thus, the weight connection interface of each barrel weight  32  is removably interconnected with the support connection interface of the barrel weight support  30  when the barrel weight is mounted to the support  30 . 
     The brackets  94  are preferably integrally formed with the body  92 . Each bracket  94  preferably comprises a mounting rail with a series of transverse slots  98  (see  FIG. 5 ). Most preferably, each of the depicted brackets  94  comprises a so-called “Picatinny” rail, although the bracket  94  could take other forms without departing from the scope of the present invention. In the usual manner, each bracket  94  provides a standardized mounting structure that is configured to removably attach a wide range of devices (e.g., a telescope sight, an iron sight, a strap connector, etc.) to the firearm  20 . 
     The illustrated weight  32  preferably includes four (4) brackets  94  spaced circumferentially about the body  92 , although an alternative number of brackets  94  could be used. While the body  92  and brackets  94  are integrally formed, it will be appreciated that the brackets  94  could be removably mounted to the body  92  (e.g., with threaded fasteners). 
     The weight  32  further presents a transverse threaded hole  100  that extends through one of the brackets  94  and the body  92  to intersect the longitudinal bore  96  (see  FIG. 5 ). The hole  100  is configured to receive the threaded fastener  76  (see  FIG. 5 ). 
     The weights  32  are preferably substantially identically sized and shaped. Furthermore, the weights  32  include substantially the same material so that the weights  32  have substantially the same weight value. The weights  32  shown in the depicted embodiment include a metallic material, such as alloy carbon steel or stainless steel. However, it is within the ambit of the present invention where each weight additionally or alternatively incorporates one or more other materials, such as a synthetic resin. 
     Again, the depicted weights  32  are preferably substantially identically sized and shaped and have substantially the same weight value. However, the principles of the present invention are applicable where the barrel weights are alternatively shaped. For instance, as will be shown in subsequent embodiments, the barrel weights could be alternatively shaped to have varying weight amounts. In one such alternative embodiment, multiple barrel weights could have the same cross-sectional shape while presenting various lengths that correspond to different weight values. In any event, such alternative barrel weights preferably have bore cross-sectional shapes that are substantially the same so that each barrel weight can be slidably mounted on the support. 
     As discussed above, the weights  32  are preferably mounted on the support  30  to provide the replicated barrel  78 . In preferred embodiments, the weights  32  are mounted to provide a balanced distribution of weight along the length of the replicated barrel  78 . 
     The illustrated weights  32  are each configured to be slidably mounted on the support  30  by inserting the beam  80  through the corresponding bore  96 . In the depicted embodiment, four (4) weights  32  are mounted in series along the support  30  and are positioned in end-to-end abutting contact with one another (although at least some space could be presented between adjacent weights  32 ). The weights  32  are preferably secured on the support  30  by inserting the fastener  76  through the hole  100  of the distalmost weight  32  and threading the fastener  76  into engagement with the respective hole  88 . 
     Each of the depicted weights  32  preferably has a weight value that preferably ranges from about two tenths of a pound (0.2 lbs) to about ten pounds (10 lbs) and, more preferably, from about one half pound (0.5 lbs) to about five pounds (5 lbs). 
     In the illustrated embodiment, the weights  32  cooperatively provide substantially all of the weight of the replicated barrel  78 . That is, the support  30  has a weight amount that is negligible compared to the weight amount cooperatively provided by the weights  32 . In various preferred embodiments, the weight amount cooperatively provided by the weights  32  ranges from about eighty percent (80%) to about ninety-five percent (95%) of the weight of the entire replicated barrel  78 . As disclosed with subsequent embodiments, alternative weight configurations encompass the possibility of one or more weights providing one hundred percent (100%) of the weight of the replicated barrel. 
     The illustrated barrel weights  32  are preferably distributed substantially equally along the support length dimension D 1  of the support  30 . As a result, the replicated barrel  78  preferably presents a weight value that is substantially constant along the barrel length. In other words, the disclosed arrangement of barrel weights  32  on the support  30  preferably provides a uniform distribution of weight along at least substantially the entire length of the replicated barrel  78 . Preferably, the weights  32  cooperatively define a weight length D 2  that ranges from about eighty percent (80%) to about one hundred percent (100%) of the support length dimension D 1 . In some alternative embodiments, the weight length dimension D 2  could also be greater than the support length dimension D 1 . 
     The barrel weights  32  are preferably configured to be used in combination with the weighted inserts  60  of the stock  24  and the magazine  28  to selectively control the distribution of weight along the entire firearm  20 . It will be appreciated that the firearm  20  presents a center of gravity CG (see  FIG. 1 ) that can be moved along the length of the firearm  20  by changing the configuration of the barrel weights  32 , inserts  60 , and/or the magazine  28 . 
     Again, the illustrated grip  48  is preferably located between the stock  24  and barrel weights  32  so that the gravitational forces of the stock  24  (including weighted inserts associated with the stock  24 ) at least partly counterbalance the gravitational forces of the barrel weights  32  and the magazine  28 . The configuration of the barrel weights  32 , inserts  60 , and/or the magazine  28  is operable to be changed to adjust the degree to which the various weights counterbalance one another. 
     The distalmost weight  32  and proximal connector  82  cooperatively retain the other weights  32  on the beam  80 . As a result, the weights  32  other than the distalmost weight  32  are not required to be secured to the support  30  with fasteners. However, it will be appreciated that more than one of the weights  32  could also be attached to the support  30  by respective fasteners. For instance, each of the four (4) depicted weights  32  could be secured with a corresponding fastener. 
     When fewer than four (4) weights  32  are mounted on the support  30 , the distalmost weight  30  is preferably attached with the fastener  76 . For instance, if three (3) weights  32  are mounted on the support  30 , the distalmost weight  32  is attached with a fastener  76  while the other two weights  32  are mounted on the beam  80  without fasteners. In such a configuration, the three (3) weights  32  are generally positioned in end-to-end abutting contact with one another (although at least some space could be presented between adjacent weights  32 ). 
     The distalmost weight  32  is preferably attached with the fastener  76  by threading the fastener  76  through the hole  100  and into the corresponding hole  88 . However, because the hole  100  is threaded, the fastener  76  can also be threaded into frictional engagement with the surface  86  of the beam  80  to frictionally attach the weight  32  to the beam  80 . 
     In the illustrated embodiment, the weights  32  are preferably interchangeably attachable to the support  30 . That is, each weight  32  can be attached to the support  30  in place of any other weight  32 . As will be shown in subsequent embodiments, such interchangeability can also be provided where the weights  32  are differently sized and shaped. 
     The illustrated weights  32  are preferably axially slidable into and out of engagement with the support  30  and are axially slidable along the support  30 . However, it is also within the ambit of the present invention where the weights  32  are alternatively shiftably engaged with the support  30 . For instance, each barrel weight could present an axial slot that permits the barrel weight to shift into and out of engagement with the support along a direction transverse to the axial direction. 
     Again, the weights  32  are preferably mounted in series axially along the support  30  and are positioned in end-to-end abutting contact with one another. This combination enables the support  30  and weights  32  to cooperatively mimic the look and feel of a working firearm barrel. 
     However, two or more of the weights  32  could be mounted axially in series but secured in locations spaced apart from one another so that no end-to-end contact occurs between each adjacent pair of weights  32 . In one such alternative embodiment, each of the weights  32  is preferably secured with a corresponding fastener. 
     The weights  32  are preferably axially arranged in series along the length of the support  30  to mimic the look and feel of a working firearm barrel. However, in accordance with certain aspects of the present invention, multiple weights  32  could be arranged in a direction transverse to the barrel length. For instance, a series of barrel weights could be attached circumferentially about the barrel support. Similarly, one or more aspects of the present invention encompass the possibility of arranging a series of barrel weights in a lateral direction relative to the barrel length. 
     In various alternative weight arrangements, it will be appreciated that one or more of the barrel weights could be attached to structure other than the support. In some alternative embodiments, one or more weights could be removably attached to other weights. For some aspects of the present invention, adjacent pairs of the depicted weights could be removably attached to one another without being directly received on the support (e.g., where multiple weights are secured in series beyond the distal end of the support). 
     As described above, the weights  32  are secured on the support  30  by threading the fastener  76  through the weight  32  and into engagement with the support  30 . However, the firearm  20  could include one or more alternative fasteners to attach the barrel weight to the support. For instance, the firearm could include various types of connection elements, such as pins, lugs, pawls, detents, collars, snap rings, threaded elements, etc., that removably interconnect the barrel weight and the support. 
     It is also within the ambit of the present invention where an alternative fastener is attached to the support to hold one or more barrel weights on the support without being attached to any of the barrel weights. For instance, the firearm could have a fastener positioned distally of the barrel weight and attached directly to the support. In one such alternative, the firearm could include a locking collar (e.g., with a set screw that engages one of the holes) secured to the support to lock the barrel weights in place. In alternative embodiments, the firearm could include various types of fastener elements, such as pins, lugs, pawls, detents, collars, snap rings, threaded elements, etc., that are directly attached to the support and without being attached to the barrel weights to hold one or more barrel weights on the support. 
     In use, the firearm  20  has various removable weight structures that are configured to control the distribution of weight along the firearm  20 . The user can selectively attach and remove each of the barrel weights  32 , weighted inserts  60 , and magazine  28  to selectively adjust the distribution of weight. That is, the barrel weights  32 , inserts  60 , and/or the magazine  28  are operable to be adjusted to change how the weights counterbalance one another. For instance, these weight structures can be selectively attached or removed to counteract any perceived imbalance in the firearm  20  when the user holds the firearm  20  by the grip  48 . 
     ALTERNATIVE EMBODIMENTS 
     Turning to  FIGS. 6-16   b , alternative preferred embodiments of the present invention are depicted. 
     With initial attention to  FIG. 6-8   d , an alternative weighted replica firearm  200  is constructed in accordance with a second preferred embodiment of the present invention. The description of this alternative firearm  200  will focus primarily on the differences of this embodiment from the first preferred embodiment described above. 
     The replica firearm  200  comprises a replica rifle and preferably includes a receiver  202 , interchangeable stocks  204   a,b , interchangeable scopes  206 , 208 , barrel weight support  210 , and interchangeable barrel weights  212   a,b,c.    
     In the illustrated embodiment, the receiver  202  includes a replica firearm frame operable to support other components of the firearm  200 . The depicted receiver  202  also preferably includes a proximal stock connector  214  with a female connection interface  216  (see  FIG. 7 ). The receiver  202  further includes a firearm grip  218  located adjacent the stock  204  and operable to be grasped by a user. 
     Also in the depicted embodiment, the receiver  202  preferably presents a mounting bracket  220  associated with an upper margin  222  of the receiver  202 . The bracket  220  is preferably integrally formed with the rest of the receiver  202 . The bracket  220  is configured to permit removable attachment of one of the firearm scopes  206 , 208 . The scopes  206 , 208  have corresponding weight values that are different from each other and are interchangeably attached to the bracket  220 . 
     Each stock  204  comprises a removable structure that can be grasped by a user and can be abutted against the user when using the firearm  200 . The stocks  204  can each include at least part of a working stock, an unfinished stock, or a replica stock. 
     The stocks  204  each preferably include a unitary body with a distal connection end  224  (see  FIGS. 7 and 8   a ). The connection end  224  comprises a fractional-turn connector that is complementally shaped relative to the proximal stock connector  214  and is operable to be removably attached to the proximal stock connector  214 . The stocks  204  are differently shaped and have corresponding weight values that are different from each other to adjust the distribution of weight adjacent the distal end of the firearm  200 . 
     The barrel weight support  210  is provided to receive one of the illustrated barrel weights  212   a,b,c . The support  210  and weights  212  cooperatively provide a replicated barrel  226  (see  FIG. 6 ). 
     The depicted support  210  is integrally formed as part of the receiver and presents a female threaded connector  227  in the form of a threaded socket (see  FIG. 7 ). The connector  227  preferably provides a female support connection interface configured to threadably receive and to be removably engaged with the male threaded connector of one of the barrel weights  212 . 
     Although the female connector  227  preferably comprises a threaded connector, the connector  227  could include various alternative female connectors without departing from the scope of the present invention. In one such alternative embodiment, the female connector could include a fractional-turn connector. It will be appreciated that alternative female connectors will similarly comprise a socket to receive a complemental male connector of the barrel weight. 
     As will be shown in subsequent embodiments, the barrel weight support could alternatively comprise a male threaded connector threadably engaged with a female connector of a barrel weight. Yet further, the barrel weight support could include an intermediate coupler located between the rest of the support and the barrel weight to interconnect the support and barrel weight to one another. In such an alternative embodiment, the intermediate coupler could a combination of male and/or female connectors. 
     The barrel weights  212  are preferably interchangeable with one another so that the barrel weights  212  can be alternatively removably attached to the support  210 . The depicted weights  212  each preferably include a unitary body that includes a proximal connector  228 . The proximal connector  228  preferably comprises a threaded stub shaft and provides a weight connection interface configured to be threadably engaged with the female threaded connector  227 . The barrel weights  212  each have a different shape and have corresponding weight values that are different from one another. 
     Although the proximal connector  228  preferably comprises a threaded connector, the connector  228  could include various alternative male connectors without departing from the scope of the present invention. In one such alternative embodiment, the male connector could include a fractional-turn connector. It will be appreciated that alternative male connectors will similarly comprise a stub shaft configured to be inserted into the socket of a complemental female connector of the barrel weight support. 
     As will be shown in subsequent embodiments, each barrel weight could alternatively comprise a female threaded connector threadably engaged with a male connector of a barrel weight. Also, each barrel weight could include an intermediate coupler located between the support and the rest of the barrel weight to interconnect the support and barrel weight to one another. In such an alternative embodiment, the intermediate coupler could have a combination of male and/or female connectors. 
     Turning to  FIGS. 9-11   b , an alternative weighted replica firearm  300  is constructed in accordance with a third preferred embodiment of the present invention. The description of this alternative firearm  300  will focus primarily on the differences of this embodiment from the first preferred embodiment described above. 
     The replica firearm  300  comprises a replica shotgun and preferably includes a receiver  302 , interchangeable stocks  304 , 306 , a barrel weight support  310 , and removable barrel weights  312 . 
     In the illustrated embodiment, the receiver  302  includes a replica firearm frame operable to support other components of the firearm  300 . The depicted receiver  302  also preferably includes a proximal stock connector  314  and a distal barrel connector  316 . The proximal stock connector  314  includes a female connection interface  318  (see  FIG. 10 ). The receiver  302  further includes a firearm grip  320  located adjacent the stock  304  and operable to be grasped by a user. 
     The distal barrel connector  316  provides a threaded female connection interface  322  (see  FIG. 10 ). The threaded connection interface  322  of the distal barrel connector  316  is configured to be removably attached to a threaded connection end of the barrel weight support  310 . 
     Each stock  304 , 306  comprises a removable structure that can be grasped by a user and can be abutted against the user when using the firearm  300 . The stocks  304 , 306  each preferably include a unitary body with a distal connection end  324  (see  FIGS. 10 and 11   a ). The connection end  324  comprises a fractional-turn connector that is complementally shaped relative to the proximal stock connector  314  and is operable to be removably attached to the proximal stock connector  314 . The stocks  304  are differently shaped and have corresponding weight values that are different from each other to adjust the distribution of weight adjacent the distal end of the firearm  300 . 
     The barrel weight support  310  is configured to receive one or more of the barrel weights  312 . The support  310  and weights  312  cooperatively provide a replicated barrel  326  (see  FIGS. 9 and 10 ). 
     The depicted support  310  includes a unitary elongated tube  328  and a threaded proximal connector  330  that are integrally formed with one another. The support  310  also presents proximal and distal ends  332   a,b , with the proximal end  332   a  being enclosed and the distal end  332   b  being open. 
     The tube  328  preferably presents a continuous interior barrel surface  334  that forms a bore  336  (see  FIG. 11 b   ). The surface  334  provides a support connection interface that slidably receives one or more weights  312 . 
     The barrel weights  312  are preferably interchangeable with one another so that the barrel weights  312  can be alternatively removably attached to the support  310 . The depicted weights  212  each preferably include a unitary cylindrical body that presents a continuous exterior weight surface  338 . 
     The barrel weights  312  are preferably substantially identically sized and shaped. Furthermore, the weights  312  include substantially the same material so that the weights  312  have substantially the same weight value. However, the principles of the present invention are applicable where the barrel weights are alternatively shaped and have varying weight amounts. In one such alternative embodiment, multiple barrel weights could have the same cross-sectional shape while presenting various lengths that correspond to different weight values. 
     Again, the weights  312  are preferably mounted within the support  310  to provide the replicated barrel  326 . In preferred embodiments, the weights  312  are mounted to provide a balanced distribution of weight along the length of the replicated barrel  326 . 
     The illustrated barrel weights  312  are each configured to be slidably mounted on the support  310  by inserting the weight  312  through the open end  332   b  and into the bore  336 . In the depicted embodiment, two (2) weights  312  are mounted in series along the support  310  and are positioned in end-to-end abutting contact with one another. The weights  312  are preferably secured within the support  310  by engaging a fastener (not shown) with the distalmost weight  312 . 
     The illustrated barrel weights  312  are preferably distributed substantially equally along the length of the support  310 . As a result, the replicated barrel  326  preferably presents a weight value that is substantially constant along the barrel length. 
     Turning to  FIGS. 12-14   b , an alternative weighted replica firearm  400  is constructed in accordance with a fourth preferred embodiment of the present invention. The description of this alternative firearm  400  will focus primarily on the differences of this embodiment from the first preferred embodiment described above. 
     The replica firearm  400  comprises a semi-automatic pistol and preferably includes a receiver  402 , interchangeable magazines  404 , 406 , 408 , a barrel weight support  410 , and interchangeable barrel weights  412   a,b.    
     In the illustrated embodiment, the receiver  402  includes a replica firearm frame operable to support other components of the firearm  400 . The depicted receiver  402  also preferably includes a firearm grip  414  operable to be grasped by a user. 
     The depicted receiver  402  further includes a magazine connector  416  integrally formed as part of the grip  414 . The magazine connector  416  preferably comprises a magazine slot  418  that slidably and alternatively receives the magazines  404 , 406 , 408  (see  FIG. 12 ). 
     Each magazine  404 , 406 , 408  can preferably be grasped by a user and removably attached to the receiver  402 . Each magazine  404 , 406 , 408  preferably comprises a unitary body and includes a connection end  420  that is removably attachable to the magazine connector  416 . 
     The connection end  420  of the magazine  404 , 406 , 408  is configured to be removably inserted within the magazine slot  418  and attached to the magazine connector  416  via a detachable connection mechanism (not shown). For instance, the magazine connector  416  and magazine  404 , 406 , 408  can include complemental detent elements that cooperatively provide the connection mechanism. 
     The illustrated magazines  404 , 406 , 408  have different shapes and present weight values that are different from one another. Therefore, the magazines  404 , 406 , 408  are configured to selectively add variable weight to the firearm  400 . If desired, the magazine connected to the receiver  402  may be selected with the appropriate barrel weight  412  to provide a balanced distribution of weight, particularly along the length of the firearm  400 . 
     The barrel weight support  410  is provided to alternatively receive each of the illustrated barrel weights  412   a,b . The support  410  and weights  412  cooperatively provide a replicated barrel  422 . 
     The depicted support  410  is integrally formed as part of the receiver and presents a male threaded connector  424  with a threaded male stub shaft (see  FIG. 12 ). The connector  424  preferably provides a male support connection interface configured to threadably receive and to be removably engaged with the female threaded connector of one of the barrel weights  412 . 
     Although the male connector  424  preferably comprises a threaded connector, the connector  424  could include various alternative male connectors without departing from the scope of the present invention. In one such alternative embodiment, the male connector could include a fractional-turn connector. In at least some embodiments, it will be appreciated that alternative male connectors may comprise a stub shaft to be inserted in a complemental female connector of the barrel weight. 
     The barrel weights  412   a,b  are preferably interchangeable with one another so that the barrel weights  412  can be alternatively removably attached to the support  410 . The depicted weights  412  each preferably include a unitary body that includes a proximal connector  426 . The proximal connector  426  preferably comprises a threaded female connector and provides a female weight connection interface configured to be threadably engaged with the male threaded connector  424 . The barrel weights  412  each have a different shape and have corresponding weight values that are different from each other. 
     Although the proximal connector  426  preferably comprises a threaded connector, the connector  426  could include various alternative female connectors without departing from the scope of the present invention. In one such alternative embodiment, the female connector could include a fractional-turn connector. It will be appreciated that alternative female connectors will also preferably comprise a socket configured to receive a complemental male shaft of the barrel weight support. 
     Turning to  FIGS. 15-16   b , an alternative weighted replica firearm  500  is constructed in accordance with a fifth preferred embodiment of the present invention. The description of this alternative firearm  500  will focus primarily on the differences of this embodiment from the first preferred embodiment described above. 
     The replica firearm  500  comprises a revolver and preferably includes a receiver  502 , a barrel weight support  504 , and interchangeable barrel weights  506   a,b,c.    
     In the illustrated embodiment, the receiver  502  includes a replica firearm frame operable to support other components of the firearm  500 . The depicted receiver  502  also preferably includes a firearm grip  508  operable to be grasped by a user. 
     The barrel weight support  504  is provided to alternatively receive each of the illustrated barrel weights  506   a,b,c . The support  504  and weights  506  cooperatively provide a replicated barrel  510 . 
     The depicted support  504  is integrally formed as part of the receiver and presents a male threaded connector  512  with a threaded male stub shaft (see  FIG. 15 ). The connector  512  preferably provides a male support connection interface configured to threadably receive and to be removably engaged with the female threaded connector of each of the barrel weights  506 . 
     Although the male connector  512  preferably comprises a threaded connector, the connector  512  could include various alternative male connectors without departing from the scope of the present invention. In at least some embodiments, it will be appreciated that alternative male connectors may comprise a stub shaft to be inserted in a complemental female connector of the barrel weight. 
     The barrel weights  506   a,b,c  are preferably interchangeable with one another so that the barrel weights  506  can be alternatively removably attached to the support  504 . The depicted weights  506  each preferably include a unitary body that includes a proximal connector  514 . The proximal connector  514  preferably comprises a threaded female connector and provides a female weight connection interface configured to be threadably engaged with the male threaded connector  512 . The barrel weights  506  each have a different shape and have corresponding weight values that are different from one another. 
     Although the proximal connector  514  preferably comprises a threaded connector, the connector  514  could include various alternative female connectors without departing from the scope of the present invention. It will be appreciated that alternative female connectors will also preferably comprise a socket configured to receive a complemental male shaft of the barrel weight support. 
     Although the above description presents features of preferred embodiments of the present invention, other preferred embodiments may also be created in keeping with the principles of the invention. Such other preferred embodiments may, for instance, be provided with features drawn from one or more of the embodiments described above. Yet further, such other preferred embodiments may include features from multiple embodiments described above, particularly where such features are compatible for use together despite having been presented independently as part of separate embodiments in the above description. 
     The preferred forms of the invention described above are to be used as illustration only, and should not be utilized in a limiting sense in interpreting the scope of the present invention. Obvious modifications to the exemplary embodiments, as hereinabove set forth, could be readily made by those skilled in the art without departing from the spirit of the present invention. 
     The inventors hereby state their intent to rely on the Doctrine of Equivalents to determine and assess the reasonably fair scope of the present invention as pertains to any apparatus not materially departing from but outside the literal scope of the invention as set forth in the following claims.