AUTOMATIC ARMS Russian patent published in 2011 - IPC F41A5/30 

FIELD: weapons and ammunition.

SUBSTANCE: automatic arms include barrel with gas escape hole, bolt with projection and return spring, barrel receiver, piston and stock. Stock has locking projection adjacent to projection of barrel receiver and chamfered projection for interaction with projection of the bolt. Stock is made in the form of the lever oscillating in vertical plane. Stock support point is projection of barrel receiver located between piston and chamfered projection of bolt. Piston is made in the form of the plate adjacent to gas escape hole.

EFFECT: simpler design of bolt mechanism of automatic arms.

7 cl, 3 dwg