The PPSh-41 (Pistolet-Pulemyot Shpagina; Russian: Пистолет-пулемёт Шпагина; "Shpagin machine pistol") was a Soviet submachine gun designed by Georgi Shpagin as an inexpensive, simplified alternative to the PPD-40. Intended for use by minimally-trained conscript soldiers, the PPSh was a magazine-fed selective-fire submachine gun using an open-bolt, blowback action. Made largely of stamped steel, it had either a box or drum magazine, and fired the 7.62x25mm pistol round. The PPSh saw extensive combat use during World War II and the Korean War. In the form of the Chinese Type 50 (a licensed copy), it was still in use in Vietnam with the Viet Cong as late as 1970.
Lt. Cade Curtis managed to quietly kill a Chinese soldier and take his PPSh when he was making his way back to American lines from Chosin Reservoir. He found it at least as good a weapon as his M-1 carbine and much easier to keep in ammunition given his situation. After Curtis rejoined American forces, he was assigned a company to command and given a new M-1. He found he preferred the Soviet submachine gun and scrounged one as soon as he could. This surprised his staff sergeant Lou Klein since he hadn't believed Curtis' claim.
In West Germany, Gustav Hozzel made a similar discovery. He found that a PPSh was better than a rifle for the close quarter, urban fighting he was engaged in so he ditched his Springfield for a submachine gun at his first opportunity. However, he did miss the Springfield's long bayonet whenever the Soviets came in close enough for hand-to-hand fighting.