RPD machine gun
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The RPD is a 7.62x39mm light machine gun developed in the Soviet Union by Vasily Degtyaryov for the 7.62×39mm M43 intermediate cartridge. It was created as a replacement for the DP machine gun chambered for the 7.62×54mmR round. It is a precursor... Wikipedia
Designed: 1943–44
Bullet size: 7.62x39 ammunition
Action: Gas operated long stroke piston, flapper locking and fires from the open bolt
Barrel length: 520 mm (20.5 in)
Effective firing range: 100–1,000 m sight adjustments