SUB-MACHINE GUN Russian patent published in 2011 - IPC F41C7/00 F41A19/03 

FIELD: weapons and ammunition.

SUBSTANCE: sub-machine gun includes barrel with barrel receiver and its cover, gas tube, bolt with bolt carrier assembly and return spring and firing mechanism with trigger retarder. Trigger through rollers in its tail part is in constant contact with its retarder made in the form of a plate freely put with one of its ends on the axis and equipped with spring, the second ends of which contact with the cam allowing to increase or decrease spring pressure through trigger retarder. Bolt is locked with cartridge extractor from magazine, which enters the slot when the bolt is turned counter-clockwise; the slot is made in end projection of barrel, as well as case ejector which when the bolt is in such position turns out to be in the cut made in the end of slot of bolt for ejector. Slot in end projection of barrel and cut in slot for case ejector have a gap allowing the cartridge extractor to attack during firing the end projection of barrel, which accompanies the muzzle deviation of the barrel downwards and to the left.

EFFECT: smooth firing interval control.

3 dwg