FIELD: weapons and ammunition.
SUBSTANCE: invention relates to the field of armament, namely to a small self-loading rifle. Rifle self-loading machine contains a rifled barrel with a receiver, a bolt-on frame with a gas piston, a bolt, a return mechanism, a trigger-type firing mechanism and a magazine. On the outside surface of the breech part of the barrel, a window is provided for ejecting the sleeve and groove for moving the handle of the rotary shutter, and on the inner surface there are three longitudinal grooves. Breech block is located in the breech block. Inside the rotary shutter, two longitudinal radial grooves with an angle of 110–120° and two radial stops with an angle of 60–70° with an inclination to the longitudinal axis of the rotary shutter 15–30°. Rotary bolt is spring-loaded with a return spiral coil spring, located between the thrust washer of the rotary bolt, locked from turning with its radial stops and end stop cover with three straight teeth on its outer surface. Trigger and firing mechanism is made of non-sturdy, contains a flange drummer with a striker.
EFFECT: increase in the combat and operational characteristics of the machine is achieved, an increase in the initial speed of the launch of the bullet from the bore of the barrel and its piercing ability in the shot, simplifying the design of the machine, reducing the overall dimensions and weight.
1 cl, 6 dwg
