FIELD: weapons.
SUBSTANCE: method of cartridge case braking at inertial lock, when on breech end of barrel (1) there arranged is element for cartridge case braking – stopper, which represents swinging cylinder (2), working element of which is tooth (3) identical as to the shape to extractor tooth. Before the shot, in the bolt front position, stopper (2) tooth (3) is inserted into sleeve (4) groove and by diagonal bevel (A) is mated with the stop in the diagonal slope in sleeve (D) groove, wherein diagonal bevel (B) on tooth rear side is supported by corresponding bevel (C) on bolt cup (5).
EFFECT: reduced weight of free bolt, improved functional capabilities of small arms with operation of automatics from free bolt recoil energy.
1 cl, 7 dwg
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