FIELD: weapon.;SUBSTANCE: single-barreled gun includes barrel connected to barrel receiver, firing mechanism with one striker, two firing hammers - main and additional, which interact with striker and firing hammer triggering mechanism, with two triggers. In barrel receiver there can be installed two paired cartridge chambers made in the form of balance arm with possibility of being moved in plane perpendicular to barrel axis; at that, movement path of cartridge chambers ensures alignment of their longitudinal axes with barrel axis, and on barrel receiver there installed is device for fixing the balance arm so that axes of cartridge chambers are fixed in turn along barrel axis.;EFFECT: improving firing arm reliability.;3 cl, 18 dwg
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