SG-43 Goryunov, Stankovyi Goryunova Model 1943, a Soviet medium machine gun

The SG-43 Goryunov was a Soviet medium machine gun that was introduced during the Second World War. It was chambered for the 7.62×54mmR cartridge, and was introduced in 1943 as a replacement for the older M1910 Maxim machine guns. It was mounted on wheeled mounts, tripods and armored vehicles.

The SG-43 used a tilting breechblock, moving sideways and locking into the side of the receiver. The feed is not straightforward,…