AUTOMATIC SMALL ARMS Russian patent published in 2001 - IPC

FIELD: weaponry. SUBSTANCE: the automatic small arms has a receiver with a breechblock and a recoil spring, trigger mechanism consisting of a sear installed on a pin with a bearing surface mating the firing plunger shifted from the sear pin, spring-loaded sear stop installed for engagement of the trigger lever with it. The sear pin is attached to the breechblock perpendicularly to the longitudinal axis. The sear is made in the form of a single-arm lever with the bearing surface made on its lower end. The firing plunger is made in the form of a projection on the receiver bottom. The sear stop is installed above the sear in the breechblock opening parallel to the sear pin, it is made in the form of a cylindrical part with a head. The trigger lever is fastened on a vertical shaft along the receiver side wall and connected to a plunger installed in the opening made in the receiver side wall. Made on the sear stop head on the side facing the trigger lever is a bevel in the direction of breechblock recoil and a boss mating the boss on the sear. A recess proportional to the boss on the sear stop is made on the sear on the inner side wall. A hammer pin is installed in the breechblock above the middle part of the sear in a vertical opening for engagement with the sear, the upper part of the hammer pin has a bevel in the direction of breechblock recoil. A trapezoidal lug is made on the receiver upper wall for engagement with the hammer pin, its horizontal part is shifted relative to the firing plunger in the direction of breechblock recoil. EFFECT: reduced mass of weapon with the basic technical characteristics remaining unchanged. 6 dwg