A Ukrainian soldier showcases a rare Russian WSS-M Vintorez marksman rifle ... a 9 mm diameter bullet weighing 250 grains into a 7.62x39 mm cartridge case. In comparison, a regular 7.62 mm bullet ...

Under Russian legislation the ... configuration for the Soviet cartridge 7.62x39 was finalized. The AR-15 was created in the late 1950s. In 1962, the rifle was authorized for military use as ...