LOCKING MECHANISM OF COMBAT SMALL ARMS FOR POWERFUL LIVE CARTRIDGE WITH A CYLINDRICAL FLANGE-FREE CARTRIDGE CASE Russian patent published in 2004 - IPC

FIELD: small arms production; locking mechanisms of combat rifled small arms, that use a powerful live cartridge.

SUBSTANCE: the invention is dealt with a locking mechanism of a combat small arms - automatic pistols, pistols -submachine guns, that use a powerful live cartridge with the cylindrical flangeless cartridge case. The invention provides, that the cartridge-chamber of the locking mechanisms of combat rifled small arms is made by the elongated in respect to the length of the cartridge case by a distance necessary for reliable locking-up of the barrel at the enlarged backward motion of the cartridge case during its extraction. At that the cartridge-chamber walls are supplied with the threading grooves. The technical result of the invention is increased reliability of a small arms barrel locking-up, improved balance, increased grouping of shots and power of the small arms.

EFFECT: the invention allows to increase reliability of locking-up a small arms barrel, to improve balance, to increase grouping of shots and power of the small arms fire.

5 dwg