FIELD: weapons and ammunition.
SUBSTANCE: proposed gun comprises breech frame with fire ledged, bolt carrier, lock elements arranged to interact with breech frame and bolt, barrel, gas piston, gas-cylinder assembly prop at barrel and trigger mechanism. Bolt front part has fire ledges to interact with fire thrusts. Fire thrusts are arranged at locking keys. At least, one locking key with front and rear fire thrusts is arranged at outer side of lateral, lower or upper surface of breech frame to inclined in interaction with bolt carrier. Breech frame wall has fire thrust to interact with rear fire thrust of locking key. Barrel is mounted at breech frame rear directed to muzzle end. Gas-cylinder prop top part has through lengthwise opening. Gas-cylinder tube rear end is fitted at breech frame front and fixed thereat while its front end passes through gas discharge prop through opening and is closed to form gas-cylinder assembly with lateral gas discharge opening aligned with gas-cylinder prop gas discharge opening.
EFFECT: higher safety.
4 cl, 4 dwg
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