The Degtyaryov machine gun (Russian: Пулемёт Дегтярёвa Пехотный) or DP-27/DP-28 is a light machine gun firing the 7.62×54mmR cartridge that was primarily used by the Soviet Union, with service trials starting in 1927, followed bygeneral deployment in 1928. This machine gun was massively used as the main fire support ...