FIELD: weapons and ammunition.
SUBSTANCE: invention relates to weapons, specifically to automatic small weapons. Small arms include barrel with chamber and gas escape hole, gas cylinder with branch pipe, rotary gas regulator with adjusting holes and inner channel for branch pipe. On gas regulator there is a pyrocartridge so that gas escape hole of pyrocartridge is connected with internal channel of gas regulator. In channel between pipe and pyrocartridge valve sleeve, and in gas regulator and gas chamber can be connected with change of position of gas regulator internal channel of gas regulator with environment adjusting holes.
EFFECT: higher reliability and stability of operation of small arms.
1 cl, 3 dwg
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