LIGHT WEAPONS BREECH BLOCK (VERSIONS) Russian patent published in 2017 - IPC F41A3/38 

FIELD: weapons and ammunition.

SUBSTANCE: light weapons breech block contains a bolt 1 and a bolt support 3 with a rotary single-arm lever 4 mounted thereon, which is operable to cooperate with receiver 6 lock 5. According to the first version, gate 2 can be mounted on the bolt, having the possibility of mounting in several fixed positions relative to the bolt 1, and also having the possibility of interaction with the rear part with rotary single-arm lever 4. According to a second version, a repositionable joggle 7 can be mounted on the rotary single-arm lever 4, having the possibility of interacting with the rear part of bolt 1. According to the third version, a swing stop 8 is provided on the bolt 1, made in the form of a single-arm lever, the end of which is able to interact with the arcuate surface of rotary single-arm lever 4 mounted on the bolt support 3.

EFFECT: operative adaptation of weapons with the principle of giving half-free bolt to use with ammunition of non-standard capacity, as well as to hindered operating conditions, is appraised.

3 cl, 34 dwg, 2 tbl