FIELD: weapons and ammunition.
SUBSTANCE: invention relates to firearms. Barrel bore lock system comprises breech frame, breechblock composed by front and rear bulky parts connected by the lever. Breechblock consists of four rectangular different-length levers arranged inside breech frame and articulated by three pins. Two extreme levers are located at one straight line while two mid levers are shifted downward, inside breech block chamber, and retained therein by return spring.
EFFECT: higher reliability, ruled out fouling of the gun in operation.
4 dwg
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