An automatic firearm breech mechanism is provided that ensures that the delaying roller remains an integral part of the breech mechanism after removing the breech mechanism from the firearm. The automatic firearm breech mechanism may include a breech, a breech carrier, and a delaying roller that is positioned between a rear vertical wall of the breech and a front vertical wall of the breech carrier. The delaying roller may move vertically while between the rear vertical wall of the breech and the front vertical wall of the breech carrier. A modified cage may surround the working area of the delaying roller. The cage may be a strip bent into the shape of an inverted letter U, featuring an opening located on its horizontal wall, while its vertical walls are fitted with a slide stop at both ends.

An automatic firearm breech mechanism is provided that ensures that the delaying roller remains an integral part of the breech mechanism after removing the breech mechanism from the firearm. The automatic firearm breech mechanism may include a breech, a breech carrier, and a delaying roller that is positioned between a rear vertical wall of the breech and a front vertical wall of the breech carrier. The delaying roller may move vertically while between the rear vertical wall of the breech and the front vertical wall of the breech carrier. A modified cage may surround the working area of the delaying roller. The cage may be a strip bent into the shape of an inverted letter U, featuring an opening located on its horizontal wall, while its vertical walls are fitted with a slide stop at both ends.

Gun comprising a gun frame; a barre supported by the gun frame, proximally delimiting a firing chamber extending along a longitudinal axis; a slide, translatable longitudinally in relation to the barrel between a forward configuration wherein the slide closes the firing chamber, and a rearward configuration wherein it is distanced from a proximal mouth of the firing chamber, to open the latter; wherein orientation of said chamber is substantially parallel to said axis in the forward configuration and in the rearward configuration; and a locking device mechanically locking barrel and slide to each other in the forward configuration, and that in the rearward configuration is guided transversally in relation to the barrel for unlocking the slide. Slide and locking device delimit arched locking surfaces that in the forward configuration are coupled with each other for locking the slide, and that in the rearward configuration are mutually spaced in a transversal direction for opening said chamber.

Gun comprising a gun frame; a barre supported by the gun frame, proximally delimiting a firing chamber extending along a longitudinal axis; a slide, translatable longitudinally in relation to the barrel between a forward configuration wherein the slide closes the firing chamber, and a rearward configuration wherein it is distanced from a proximal mouth of the firing chamber, to open the latter; wherein orientation of said chamber is substantially parallel to said axis in the forward configuration and in the rearward configuration; and a locking device mechanically locking barrel and slide to each other in the forward configuration, and that in the rearward configuration is guided transversally in relation to the barrel for unlocking the slide. Slide and locking device delimit arched locking surfaces that in the forward configuration are coupled with each other for locking the slide, and that in the rearward configuration are mutually spaced in a transversal direction for opening said chamber.

A reciprocating bolt assembly has delayed blowback and a firing pin block. Features prevent out-of-battery firing, when the bolt assembly is not fully engaged to the firing chamber or barrel face, a movable member within a bolt body functions as a blocking member that blocks the firing pin and prevents the firing pin from striking a cartridge. In embodiments, the firing pin has two stop portions that the movable member can engage depending on the cycle status of the firearm. A reverse cam mechanism associated with the firing pin blocking provides a resistance to and delays blowback.

A striking mechanism for triggering a firing pin of an externally or self-powered weapon that has a breech. The striking mechanism including a kinematic mechanism having a trigger rocker, a safety device and a release. The trigger rocker acts on the safety device such that the release functionally interacts with a striking hammer. The striking hammer having a telescopic pushrod. A spring mounted around the telescopic pushrod is tensioned when the breech is advanced and a catching edge of the release engages under a catching edge of the striking hammer.

A striking mechanism for triggering a firing pin of an externally or self-powered weapon that has a breech. The striking mechanism including a kinematic mechanism having a trigger rocker, a safety device and a release. The trigger rocker acts on the safety device such that the release functionally interacts with a striking hammer. The striking hammer having a telescopic pushrod. A spring mounted around the telescopic pushrod is tensioned when the breech is advanced and a catching edge of the release engages under a catching edge of the striking hammer.

Gun (1) comprising a gun frame (2); a barrel (4), supported by the gun frame (2), proximally delimiting a firing chamber (6) extending along a longitudinal axis (X); a slide (8), translatable longitudinally in relation to the barrel (4) between a forward configuration wherein the slide closes the firing chamber (6), and a rearward configuration wherein it is distanced from a proximal mouth (12) of the firing chamber (6), to open the latter; wherein orientation of said chamber (6) is substantially parallel to said axis (X) in the forward configuration and in the rearward configuration; and a locking device (10) mechanically locking barrel (4) and slide (8) to each other in the forward configuration, and that in the rearward configuration is guided transversally in relation to the barrel (4) for unlocking the slide (8). Slide (8) and locking device (10) delimit arched locking surfaces (14, 16) that in the forward configuration are coupled with each other for locking the slide (8), and that in the rearward configuration are mutually spaced in a transversal direction for opening said chamber (6).

Gun (1) comprising a gun frame (2); a barrel (4), supported by the gun frame (2), proximally delimiting a firing chamber (6) extending along a longitudinal axis (X); a slide (8), translatable longitudinally in relation to the barrel (4) between a forward configuration wherein the slide closes the firing chamber (6), and a rearward configuration wherein it is distanced from a proximal mouth (12) of the firing chamber (6), to open the latter; wherein orientation of said chamber (6) is substantially parallel to said axis (X) in the forward configuration and in the rearward configuration; and a locking device (10) mechanically locking barrel (4) and slide (8) to each other in the forward configuration, and that in the rearward configuration is guided transversally in relation to the barrel (4) for unlocking the slide (8). Slide (8) and locking device (10) delimit arched locking surfaces (14, 16) that in the forward configuration are coupled with each other for locking the slide (8), and that in the rearward configuration are mutually spaced in a transversal direction for opening said chamber (6).

The invention relates to a bolt stop for an automatic firearm comprising a bolt stop lever that can be moved between a release position and a catch position, and a locking device that can be moved between a standby position and a locking position, for selectively securing the bolt stop lever in the release position, wherein the locking device is disengaged with the bolt stop lever when in the standby position, and is engaged in with the bolt stop lever when in the locking position, the bolt stop lever deactivated in the locking position.