FIELD: weaponry.
SUBSTANCE: invention relates to guns using gas extraction for reloading. Fixed barrel below breech housing has a stem and is fitted into the frame. The breech block front is skewed downward. The breech block sides are provided with firing ledges engaged, in the stem grooves, with the firing stops. The breech block recess, above the top part of upper bullet in the magazine, provides for transmission, by its tail end, of force to the upper bullet bolt at its thrust point level to get the bolt skewed. The piston, spring-loaded and elongated, representing the breech block casing incorporates an opening for the cartridge case to be ejected, cam plate side slots intended for uprising the breech block firing ledges in the piston back travel. During the said travel, the piston upraises the said firing ledges to disengage the breech block and move it back. In forward travel, the piston locking ledge skews the breech block downward onto the support. Gas chamber is fitted on the barrel muzzle enveloping the barrel. Gas escape channels are arranged all around the barrel.
EFFECT: higher reliability of fire.
7 dwg
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