A hand-held device, comprising: a first portion including: a handle; a trigger operatively coupled with the handle, wherein the trigger allows actuation of the hand-held device; and a first tube defining a central axis (" A1 "); a second portion including: a second tube co-axial with the central axis (" A1 "), wherein the second tube being partly inserted into the first tube and being allowed to telescope in and out of the same; and one or more actuators configured to be actuated by the trigger; and a mechanism, including: an adaptor having a first end and a second end and being adapted to slide (" S1 ") longitudinally, inside the second tube, along the central axis (" A1 "), wherein the first end of the adapter being connected to the actuators via a cable; a rack in cooperation with the trigger adapted to enter the adaptor at its second end and to slide (" S1 ") longitudinally, inside the adaptor, along the central axis (" A1 "); and a second lock rotatably coupled to the adaptor, wherein the second lock has a plurality of second engaging elements and the rack has third engaging elements, such that the second engaging elements cooperate with the third engaging elements to selectively engage therewith; characterized in that: wherein the second lock has protrusions and/or detents at its outer side that interact with related protrusions and/or indents on an inner side of the second tube to fix them relative to each other during rotation; the inner side of the first tube has a plurality of first engaging elements; the second tube has a plurality of fourth engaging elements, such that the first engaging elements cooperate with the fourth engaging elements so that they selectively engage, whereby the cooperating second and third engagement elements ( 170, 190) and the cooperating first and fourth engagement elements ( 111, 130) are arranged such that the engagement and disengagement of the second lock with the rack, and the inner side of the first tube with the second tube is synchronized. a first portion including: a handle; a trigger operatively coupled with the handle, wherein the trigger allows actuation of the hand-held device; and a first tube defining a central axis (" A1 "); a handle; a trigger operatively coupled with the handle, wherein the trigger allows actuation of the hand-held device; and a first tube defining a central axis (" A1 "); a second portion including: a second tube co-axial with the central axis (" A1 "), wherein the second tube being partly inserted into the first tube and being allowed to telescope in and out of the same; and one or more actuators configured to be actuated by the trigger; and a second tube co-axial with the central axis (" A1 "), wherein the second tube being partly inserted into the first tube and being allowed to telescope in and out of the same; and one or more actuators configured to be actuated by the trigger; and a mechanism, including: an adaptor having a first end and a second end and being adapted to slide (" S1 ") longitudinally, inside the second tube, along the central axis (" A1 "), wherein the first end of the adapter being connected to the actuators via a cable; a rack in cooperation with the trigger adapted to enter the adaptor at its second end and to slide (" S1 ") longitudinally, inside the adaptor, along the central axis (" A1 "); and a second lock rotatably coupled to the adaptor, wherein the second lock has a plurality of second engaging elements and the rack has third engaging elements, such that the second engaging elements cooperate with the third engaging elements to selectively engage therewith; an adaptor having a first end and a second end and being adapted to slide (" S1 ") longitudinally, inside the second tube, along the central axis (" A1 "), wherein the first end of the adapter being connected to the actuators via a cable; a rack in cooperation with the trigger adapted to enter the adaptor at its second end and to slide (" S1 ") longitudinally, inside the adaptor, along the central axis (" A1 "); and a second lock rotatably coupled to the adaptor, wherein the second lock has a plurality of second engaging elements and the rack has third engaging elements, such that the second engaging elements cooperate with the third engaging elements to selectively engage therewith; characterized in that: wherein the second lock has protrusions and/or detents at its outer side that interact with related protrusions and/or indents on an inner side of the second tube to fix them relative to each other during rotation; the inner side of the first tube has a plurality of first engaging elements; the second tube has a plurality of fourth engaging elements, such that the first engaging elements cooperate with the fourth engaging elements so that they selectively engage, wherein the second lock has protrusions and/or detents at its outer side that interact with related protrusions and/or indents on an inner side of the second tube to fix them relative to each other during rotation; the inner side of the first tube has a plurality of first engaging elements; the second tube has a plurality of fourth engaging elements, such that the first engaging elements cooperate with the fourth engaging elements so that they selectively engage, whereby the cooperating second and third engagement elements ( 170, 190) and the cooperating first and fourth engagement elements ( 111, 130) are arranged such that the engagement and disengagement of the second lock with the rack, and the inner side of the first tube with the second tube is synchronized.