The PPSh-41 (Pistolet-Pulemyot Shpagina; Russian: Пистолет-пулемёт Шпагина; "Shpagin machine pistol") is a Soviet submachine gun designed by Georgi Shpagin as an inexpensive, simplified alternative to the PPD-40. The PPSh was a magazine-fed selective fire submachine gun using an open-bolt, blowback action. It was one of the major infantry weapons of the Soviet armed forces during World War II. The total number of PPShs manufactured during World War II is estimated to be more than 6 million. Made largely of stamped steel, it could be loaded with either a box or drum magazine, and fired the 7.62×25mm Tokarev 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. According to the 2002 edition of The Encyclopedia of Weapons of World War II the PPSh was still in use with irregular military forces.