BURST-LIMITING DEVICE Russian patent published in 2010 - IPC F41A19/02 

FIELD: weapons and ammunition.

SUBSTANCE: weapon comprises horizontal box-like intermediate magazine case of low capacity, box-like main magazine case of weapon, shooting aggregate, guide bed, bolt carrier and burst-limiting device. Shooting aggregate for production of fixed burst moves forward from back position relative to its guide bed. Horizontal box-like intermediate magazine case arranged on side wall of shooting aggregate receiver and automatically charged from lower box-like main magazine case is equipped with its own spring-loaded lever feeder of cartridges, for mode of shooting "fixed burst", which comprises muzzle vertical hinged joint and a pair of breech ledges making the mechanism of burst-limiting device, one of which is horizontal and arranged with the possibility to pass into side opening of receiver and fixation of bolt carrier in position of its undershoot to cartridge-chamber, as the last cartridge is sent into it from intermediate magazine case to complete "fixed burst", and the other breech vertical ledge of lever cartridge feeder interacts with master diverter element arranged on part of weapon fixed in process of firing, and serving for forced disengagement of breech horizontal ledge with bolt carrier, and the latter - with side of receiver that retains bolt carrier in position of undershoot relative to cartridge-chamber by means of horizontal ledge. Disengagement is done after connection of disconnector mechanism, which to complete recoil of shooting aggregate automatically disengages bolt carrier and weapon striker. Diverter element represents a wedge-like longitudinal element facing muzzle part of weapon with its beveled part and connected by its breech part to breech wall of longitudinal side pocket arranged on guide bed, which serves for passage of specified side intermediate magazine case. Wedge-like longitudinal element is arranged inside this pocket with the possibility of its passage as shooting aggregate recoils between side wall of receiver of the latter and specified breech vertical ledge of lever cartridge feeder, with the possibility of side diversion of the latter for the value that is less than diametre of used cartridge case for disengagement of bolt carrier with receiver of shooting aggregate.

EFFECT: operational characteristics are improved.

2 cl, 2 dwg