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).

A weapon which has a completely modular design. For this purpose, the weapon is subdivided into weapon-specific assemblies which are designed as carrier units of the components and/or of the modular assemblies of the weapon. A first assembly can be a modular weapon housing. Said weapon housing has a carrier unit into which a breech system of the weapon and its components are built. Another modular assembly is a weapon cradle. Into this modular assembly the weapon housing module with breech system is integrated. The weapon housing module can be complemented with the weapon barrel module. The components are connected to the modular assemblies and the modular assemblies to each other by means of rails and guides and complementary rails and guides for the assemblies, by binders and holders, by pins, bolts and quick release fasteners.

A weapon which has a completely modular design. For this purpose, the weapon is subdivided into weapon-specific assemblies which are designed as carrier units of the components and/or of the modular assemblies of the weapon. A first assembly can be a modular weapon housing. Said weapon housing has a carrier unit into which a breech system of the weapon and its components are built. Another modular assembly is a weapon cradle. Into this modular assembly the weapon housing module with breech system is integrated. The weapon housing module can be complemented with the weapon barrel module. The components are connected to the modular assemblies and the modular assemblies to each other by means of rails and guides and complementary rails and guides for the assemblies, by binders and holders, by pins, bolts and quick release fasteners.

A cocking device for a firing pin spring of a firing pin of a weapon, the firing pin being integrated into a breech. This firing pin spring is cocked during the pre-run of the control slide, by means of a cocking slide on the weapon, said cocking slide having a cocking curve, in which a pin of a cocking rocker is engaged.

A cocking device for a firing pin spring of a firing pin of a weapon, the firing pin being integrated into a breech. This firing pin spring is cocked during the pre-run of the control slide, by means of a cocking slide on the weapon, said cocking slide having a cocking curve, in which a pin of a cocking rocker is engaged.

A locking mechanism for a firearm including a frame, a slide, a barrel and a firing mechanism is disclosed. The locking mechanism includes a body to engage the barrel and a slide lock extending from the body to engage the slide. With the slide in a forward position, the slide lock extends at least partially through an ejection port of the slide to engage the barrel with the slide.

A locking mechanism for a firearm including a frame, a slide, a barrel and a firing mechanism is disclosed. The locking mechanism includes a body to engage the barrel and a slide lock extending from the body to engage the slide. With the slide in a forward position, the slide lock extends at least partially through an ejection port of the slide to engage the barrel with the slide.

A butt stock for a firearm including the butt stock arrangeable in a first configuration to fold toward a first side of a receiver of the firearm into a first folded position along the first side of the receiver, and unfoldable away from the first side of the receiver of the firearm into an unfolded position rearward of the receiver; and the butt stock arrangeable in a second configuration to fold toward a second side of the receiver of the firearm into a second folded position along the second side of the receiver, and unfoldable away from the second side of the receiver of the firearm into the unfolded position rearward of the receiver.

A locking mechanism for a firearm including a frame, a slide, a barrel and a firing mechanism is disclosed. The locking mechanism includes a body to engage the barrel and a slide lock extending from the body to engage the slide. With the slide in a forward position, the slide lock extends at least partially through an ejection port of the slide to engage the barrel with the slide.

A locking mechanism for a firearm including a frame, a slide, a barrel and a firing mechanism is disclosed. The locking mechanism includes a body to engage the barrel and a slide lock extending from the body to engage the slide. With the slide in a forward position, the slide lock extends at least partially through an ejection port of the slide to engage the barrel with the slide.