7_62 MM AUTOMATIC WEAPON Russian patent published in 2020 - IPC F41C7/00 F41A21/12 

FIELD: weapons.

SUBSTANCE: automatic weapon 7.62 mm comprises breech frame, trigger mechanism, breech frame with breech, breech frame cover, barrel mandrel with tube, folding butt, handle, forebody, barrel with fly block, gas chamber and aiming block, consisting of cartridge chamber, bullet inlet and rifled part. Bullet inlet is made in form of two mating truncated cone sections, wherein angle of inclination α of second tapered section is selected 1 deg 15' ± 11', threaded part is made with rifling step h, which is within 255 ≤ h ≥ 275 mm, ratio of cross-section area of bullet of used cartridge to cross-section area of rifled part of barrel bore - value of interference S makes from 1.1 to 3 %.

EFFECT: technical result is improved characteristics of accuracy of fire, reduced angle of bullet inlet, broader functional capabilities due to change in layout and design of weapon assemblies.

11 cl, 6 dwg, 2 tbl