FIREARM WITH GAS DRIVE

The invention concerns a carbine with a framework in which a barrel (1), with a locking sleeve (3), with a lock (7), with a sliding block (28) and with a gas-powered actuator (2) is firmly mounted.In order to arrive at the quietest operation of the actuator, it is provided that the (2) has an annular piston (18), which is movable on a plunger support (24) forming an expansion chamber (23), and acts on the sliding block (28) by means of push rods (19). It is pushed forward by reset springs (27). A gas borehole (20) penetrates the wall of the barrel (1) and of the plunger support (24). The plunger support (24) has an outlet channel (22) in its front, upper range, which is, in its resting position, fluid-technically separate from the annular piston (18) on of the expansion chamber (23) and is fluid-technically connected with an outlet channel (22) of the annular piston (18) after backward motion over a predetermined length.