FIELD: weapons and ammunition.
SUBSTANCE: proposed method consists in that breech moves in two directions, that is in first direction at back blow and in second direction at counter-recoil. Fixed cylinder is arranged nearby said breech to house movable cylinder rigidly secured via rod with said breech. At fire during gun recoil, breech with piston displaces. Air rarefaction zone is formed inside the cylinder. Air nearby breech saturated with powder gases is sucked via first one-way valve into the cylinder and stays therein up to gun counter-recoil. At counter-recoil, piston displaces in opposite direction in cylinder to displace air therefrom via second one-way valve and pipeline into neutraliser filer. Air with powder gases is removed from combat compartment.
EFFECT: decreased gas content.
1 dwg
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