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 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.

In a guide device (100) for guiding a slide (300) of a semiautomatic or automatic firearm along an upper part of a frame (200) during a sliding movement in connection with the firing of a cartridge (400), a narrow design of a slide (300) is made possible when a double-stack magazine (210) is used, in that a slideway which allows sliding between the frame (200) and slide (300) is divided into two segments (220, 240), a first segment (220) being arranged remote from barrel (230) of the firearm behind a magazine chamber (211) designed to receive a magazine (210) containing cartridges (400), and a second segment (240) being arranged close to the barrel (230) in front of the magazine chamber (211).

A firearm system includes a bolt carrier with an internal cavity, a piston disposed within the internal cavity, a forward configuration where the piston is in a forwardmost position relative to the bolt carrier, and an aft configuration where the piston is in a rearmost position relative to the bolt carrier. The piston slides forward and aft relative to the bolt carrier. In the forward configuration, the entire piston remains disposed within the bolt carrier.

A gun has parts that slide past one another during operation. A coating is formed on at least a surface of a first part that contacts a second part. At least an upper layer of the coating is porous and comprises a thermoset polymer and a filler. One or both parts may be part of a gas-operated reloading mechanism. The coating prevents jamming by excluding particles, yielding to particles that still manage to intrude, and by providing a reservoir for lubricant. The coating reduces clearances, improves accuracy, and reduces operating temperatures. The coating excludes particles from the lubricant, effectively allowing a large volume of lubricant to be used without the drawback of trapping dirt and other contaminants in the lubricant.

A safety apparatus for a grenade launcher assembly which provides a dual-way ammunition feed, recognizes the direction automatically without the importance of which direction the user opens the handle in order to prevent the direction selector or movement from reversing and which does not permit opening to the other unselected side for the filling-off phase.

A self-loading shotgun includes a lock movable inside a lock housing between an open position and a closed position, a barrel, a magazine disposed below the barrel, a lock catch for holding the lock in the open position, and a feeder system for lifting a cartridge delivered from the magazine to the height of the barrel. The feeder system includes a feeder that swivels about a transverse axis and a magazine hatch that interacts with the lock catch. To allow the self-loading shotgun to be fully loaded even when the lock is open, the swivel movement of the feeder generated by the lock is controlled by a control element separate from the lock catch.

A self-loading shotgun includes a lock movable inside a lock housing between an open position and a closed position, a barrel, a magazine disposed below the barrel, a lock catch for holding the lock in the open position, and a feeder system for lifting a cartridge delivered from the magazine to the height of the barrel. The feeder system includes a feeder that swivels about a transverse axis and a magazine hatch that interacts with the lock catch. To allow the self-loading shotgun to be fully loaded even when the lock is open, the swivel movement of the feeder generated by the lock is controlled by a control element separate from the lock catch.

A shell loading system for a firearm in one embodiment includes a barrel, receiver, reciprocating slide and bolt assembly, tubular magazine, carrier operable to receive and feed shells from the magazine into the action, a spring-biased carrier latch laterally moveable to engage the carrier, and a pawl pivotably mounted on the carrier. A carrier latch disconnect is also pivotably mounted to the carrier and operated by the pawl. The carrier latch disconnect and pawl are movable independently of each other in one embodiment. The carrier latch disconnect is operable to block the carrier latch from engaging the carrier in a first position. In a second position when activated by the pawl, the carrier latch disconnect releases the carrier latch to engage the carrier which is locked in a downward position to receive a shell from the magazine.

A shell loading system for a firearm in one embodiment includes a barrel, receiver, reciprocating slide and bolt assembly, tubular magazine, carrier operable to receive and feed shells from the magazine into the action, a spring-biased carrier latch laterally moveable to engage the carrier, and a pawl pivotably mounted on the carrier. A carrier latch disconnect is also pivotably mounted to the carrier and operated by the pawl. The carrier latch disconnect and pawl are movable independently of each other in one embodiment. The carrier latch disconnect is operable to block the carrier latch from engaging the carrier in a first position. In a second position when activated by the pawl, the carrier latch disconnect releases the carrier latch to engage the carrier which is locked in a downward position to receive a shell from the magazine.