Gas storage device for semi-automatic firearm, has push button storing gas by closing centre punch of relay capacitor, and return spring emptying capacitor when sniper does not activate button and gas pushing piston acting on cylinder head

摘要

The device has a relay capacitor (1) connected to an orifice (10) below a barrel (9) through a tube (2). The capacitor is filled with gas under pressure using an inlet valve (3) and blocks the gas under depression induced by an outlet of a missile of the barrel. The capacitor has, in outlet, a centre punch (4) which is activated manually by a push button (5) which stores the gas by closing the punch. A return spring empties the capacitor by opening the punch when a sniper does not activate the button and the gas pushes a piston (8) which acts on a cylinder head (7).