A method of feeding rounds of linked, or un-linked, ammunition to a gun includes a motor-driven chain drive which rotates about a track. A rotatable feeder engages the ammunition to feed an ammunition round into a round extractor/retractor. A rotatable round positioner receives an ammunition round from the round extractor/retractor, and rotates it to a firing position. A main geneva wheel, mounted near the chain drive, is sequentially engaged by first and second drive rollers, secured to the chain drive, for being periodically rotated thereby. Drive pins of the main geneva wheel sequentially engage radial slots in a belt/round feed geneva wheel and a round positioning geneva wheel for timed rotation thereof to synchronize the operation of the round feeder and round positioner.

A compact 50 caliber machine gun system which utilizes an original Browning rear-stripping ammunition link design. The chain-driven machine gun system features a delinker assembly configured to receive a belt of linked cartridges, separate each of the cartridge from the belt rearwardly, and feed each of the cartridges for firing. The delinking function is separated from the motion of the bolt assembly so as to reduce the overall length of the gun system. The receiver has a receiver mounting length RML from the rear base of each incoming cartridge in a belt of connected links to the rear end of the receiver that is less than 15 inches. A shuttle feed system is incorporated into the basic chain gun style mechanism which had been limited to a sprocket feed on all previous designs. An electronic anti-hangfire system uses a single proximity switch and the already existing parts and motions of the gun.

A compact 50 caliber machine gun system which utilizes an original Browning rear-stripping ammunition link design. The chain-driven machine gun system features a delinker assembly configured to receive a belt of linked cartridges, separate each of the cartridge from the belt rearwardly, and feed each of the cartridges for firing. The delinking function is separated from the motion of the bolt assembly so as to reduce the overall length of the gun system. The receiver has a receiver mounting length RML from the rear base of each incoming cartridge in a belt of connected links to the rear end of the receiver that is less than 15 inches. A shuttle feed system is incorporated into the basic chain gun style mechanism which had been limited to a sprocket feed on all previous designs. An electronic anti-hangfire system uses a single proximity switch and the already existing parts and motions of the gun.

Firearm bolt assemblies and firearms including the same are described. In embodiments the firearm bolt assemblies are configured to localize compressive forces applied during a transition from an initial position to a firing position to a first cam system on one side of the firearm bolt assembly, and to localize compressive forces applied during a transition from the firing position to the initial position to a second cam system another side of the firearm bolt assembly. Localizing the forces in that manner enables the use of a first cam system that is relatively robust compared to the second cam system.

Firearm bolt assemblies and firearms including the same are described. In embodiments the firearm bolt assemblies are configured to localize compressive forces applied during a transition from an initial position to a firing position to a first cam system on one side of the firearm bolt assembly, and to localize compressive forces applied during a transition from the firing position to the initial position to a second cam system another side of the firearm bolt assembly. Localizing the forces in that manner enables the use of a first cam system that is relatively robust compared to the second cam system.

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.

A drive for a weapon having a drive cam and a connecting rod unit guided in the drive cam. The drive cam includes the firing cycle of the weapon. A connecting rod unit has a front pin and a rear pin, a strut pin. With its front pin, the connecting rod unit engages in the drive cam. The front pin is also connected to a crank, which is driven by an external drive. The strut pin is connected to an overall control slider of a breech block of the weapon. An emergency stop device, which when a shot is fired makes a pin extend and ensures that the overall control slider is taken along. If, on the other hand, no shot is fired, the pin is not made to extend and the overall control slider not moved. Parts of the drive may in this case continue to run.

A drive for a weapon having a drive cam and a connecting rod unit guided in the drive cam. The drive cam includes the firing cycle of the weapon. A connecting rod unit has a front pin and a rear pin, a strut pin. With its front pin, the connecting rod unit engages in the drive cam. The front pin is also connected to a crank, which is driven by an external drive. The strut pin is connected to an overall control slider of a breech block of the weapon. An emergency stop device, which when a shot is fired makes a pin extend and ensures that the overall control slider is taken along. If, on the other hand, no shot is fired, the pin is not made to extend and the overall control slider not moved. Parts of the drive may in this case continue to run.

A compact 50 caliber machine gun system which utilizes an original Browning rear-stripping ammunition link design. The chain-driven machine gun system features a delinker assembly configured to receive a belt of linked cartridges, separate each of the cartridge from the belt rearwardly, and feed each of the cartridges for firing. The delinking function is separated from the motion of the bolt assembly so as to reduce the overall length of the gun system. The receiver has a receiver mounting length RML from the rear base of each incoming cartridge in a belt of connected links to the rear end of the receiver that is less than 15 inches. A shuttle feed system is incorporated into the basic chain gun style mechanism which had been limited to a sprocket feed on all previous designs. An electronic anti-hangfire system uses a single proximity switch and the already existing parts and motions of the gun.