SG-43 Goryunov

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.

Country Name Origin Year
Russia (USSR) 1943
Country Name Operational Year Retirement Year
North Korea 1950 1953 View
Russia (USSR) 1939 1945 View

The SG-43 used a tilting breechblock, moving sideways and locking into the side of the receiver. The feed is not straightforward, as the gun fires the 7.62×54mmR round, and this has to be withdrawn rearwards from the belt before ramming into the breech. The reciprocating motion is achieved by using two claws to pull the round from the belt, and then an arm pushes the round into the cartridge guide ready for the bolt to carry it to the breech. Despite this complication, the SG-43 was remarkably reliable and feed jams were apparently few.

The barrel is air-cooled and massively dense, contributing to a fairly high overall weight. The bore is chromium-plated and able to withstand continuous fire for long periods. The barrel can also be easily changed by releasing a simple lock, and the carrying handle allows a hot barrel to be lifted clear without difficulty. The WWII version of the gun had a smooth outline to the barrel, and the cocking handle was under the receiver, with no dust covers to the feed and ejection ports.

Type Medium machine gun
Place of origin Soviet Union
Service history
In service 1943–1968 (Soviet Union)
Wars World War II, Korean War
Production history
Designer P.M. Goryunov
Designed 1940-1943
Variants SG-43, SGM, SGMT, SGMB
Specifications
Weight 13.8 kg (30.42 lb) gun body

41 kg (90.39 lb) on wheeled mount
Length 1,150 mm (45.3 in)
Barrel length 720 mm (28.3 in)
Cartridge 7.62×54mmR
Action Gas-operated
Rate of fire 500–700 rounds/min
Muzzle velocity 800 m/s (2,624 ft/s)
Effective firing range 1100 m (1200 yd)
Maximum firing range 1500 meters
Feed system 200 or 250 round belts
Sights Iron sights

End notes