What year was XXX commissioned?
Degtyaryov machine gun
The Degtyaryov machine gun (Russian: Пулемёт Дегтярёвa Пехотный Pulemyot Degtyaryova Pekhotny ``Degtyaryov's infantry machine gun'') or DP is a light machine gun firing the 7.62×54mmR cartridge that was used primarily by the Soviet Union starting in 1928.
1928