SUBMACHINE GUN Russian patent published in 2009 - IPC F41C3/00 F41A3/40 F41A5/30 

FIELD: weapons and ammunition.

SUBSTANCE: submachine gun breech has locking lever furnished with a head coupled with piston that can turn on axles arranged on the lever post inner side. The lever outer side has axial slots for breechblock to move along guide ledges furnished with locks. Aforesaid axial slots allow breechblock to turn in the locks of aforesaid guide ledges in both direction in locking and unlocking the beech block. On unlocking the breechblock, aforesaid piston is pushed outside aforesaid cylinder by powder gases, the cylinder being arranged right above the barrel breech housing.

EFFECT: reduced weight, higher reliability and ease of operation.

8 dwg