FIELD: automatic systems of small arms and weaponry.
SUBSTANCE: the breechblock locking device has a gas engine with a piston pusher coupled to a rod pusher that is connected by movable panels. The panels have inclined slots for engagement with the bulges of the locking links. The intermediate stops are mode for their placement in the front extreme position of the breechblock before a shot between the breechblock fire lugs and the receiver stops. The synchronous breechblock locking device has a gas engine coupled to the movable panels having inclined slots and intermediate stops coupled to the locking links. The intermediate supports are made for their placement between the fire lugs and the receiver stops, and for their disengagement by means of a compensating mechanism. The double-stage gas engine has cylinders of the first and second stages. The cylinders are coupled by by-pass channels and made for by-pass of ponder gases to the second-stage cylinder. The method for breechblock locking consists in the fact that the breechblock locking consists in the fact that the breechblock is locked synchronously. The intermediate supports are moved from the drive of the engine first stage, the engine second stage is used for spring compression at a rise of gas pressure in the bore, with a subsequent slacking of it at a pressure drop for unlocking the breechblock by disengagement of the intermediate supports from the fire lugs and the receiver stops.
EFFECT: simplified construction and fabrication practice of weapon, reduced weapon weight and overall dimensions, reduced force of the impact moments and enhanced stability of the weapon, reduced overall dimensions of the gas engine, improved balancing of the weapon, enhanced combat and operating characteristics of the weapon.
7 cl, 6 dwg
