A pistol with a frame, a breech which is movable thereon and a rotary barrel which is located in the breech. The rotary barrel is rotated and moved axially with respect to the breech between a locked position and an open position by means of cams and grooves. In order to avoid the wear which is customary in weapons of this type, the breech is provided with a stop surface running obliquely with respect to the bore axis, and the barrel has a corresponding contact surface. During the locking by the flat contact between said surfaces, the beginning of the relative rotational movement is initiated. By virtue of this precisely guided and directed interaction, wear can be reduced by orders of magnitude relative to the prior art.

A pistol with a frame, a breech which is movable thereon and a rotary barrel which is located in the breech. The rotary barrel is rotated and moved axially with respect to the breech between a locked position and an open position by means of cams and grooves. In order to avoid the wear which is customary in weapons of this type, the breech is provided with a stop surface running obliquely with respect to the bore axis, and the barrel has a corresponding contact surface. During the locking by the flat contact between said surfaces, the beginning of the relative rotational movement is initiated. By virtue of this precisely guided and directed interaction, wear can be reduced by orders of magnitude relative to the prior art.

The present disclosure relates to kits and associated methods for converting a semi-automatic firearm into a bolt single action firearm, as well as the converted firearm itself. The kit includes a housing (e.g. upper receiver) that accommodates a bolt carrier and a charging handle and a carrier key, if desired. The housing has ends which mount to the existing lower receiver of the semi-automatic firearm to convert the semi-automatic firearm into a manual bolt-action firearm.

The present disclosure relates to kits and associated methods for converting a semi-automatic firearm into a bolt single action firearm, as well as the converted firearm itself. The kit includes a housing (e.g. upper receiver) that accommodates a bolt carrier and a charging handle and a carrier key, if desired. The housing has ends which mount to the existing lower receiver of the semi-automatic firearm to convert the semi-automatic firearm into a manual bolt-action firearm.

A reciprocally-cycled weapon delinks and fires cartridges in open-end linked ammunition belts or close-end linked ammunition belts. The weapon has first round select and first cycle fire capabilities. The bolt carrier assembly translates out of phase with the extractor assembly. The extractor assembly is configured for rearward extraction of the cartridges in close-end linked ammunition belts. The weapon works seamlessly with open-end linked and close-end linked ammunition belts.

A bolt carrier for gas impingement rifles equipped with a sound suppressor mechanism. The bolt carrier is configured to tortuously direct gas to a gas exhaust pocket and into a magazine well of the gas impingement rifle, thereby lessening ejection port light signature and significantly reducing the peak noise in the vicinity of the firer's ears. The gas exhaust pocket of the bolt carrier also improves the operator air quality and reduces bolt lug and chamber fouling associated with the other devices that have attempted to address the noise problem.

A bolt carrier for gas impingement rifles equipped with a sound suppressor mechanism. The bolt carrier is configured to tortuously direct gas to a gas exhaust pocket and into a magazine well of the gas impingement rifle, thereby lessening ejection port light signature and significantly reducing the peak noise in the vicinity of the firer's ears. The gas exhaust pocket of the bolt carrier also improves the operator air quality and reduces bolt lug and chamber fouling associated with the other devices that have attempted to address the noise problem.

An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

An ammunition magazine is used with a reciprocally-cycled weapon for delinking and firing cartridges in close-end linked ammunition belts. The magazine includes a housing with an ammunition indexing mechanism fixed to one side of the housing. A magazine feed box is disposed above the ammunition indexing mechanism. The magazine feed box includes a movable follower having an upper and a lower position and cam pins that engage cam slots in the magazine feed box. The movable follower is configured to receive a cartridge from the weapon.