The PPSh-41 (Pistolet-Pulemyot Shpagina in Russian) was a submachine gun designed by Georgi Shpagin as a cheap alternative and simplified version of the PPD-40 submachine gun. The PPSh-41 submachine gun was fed by an automatic loader, blowback operated and fired from an open bolt. It was one of the main light arms of the Soviet armed forces during World War II. The total quantity of PPSh-41 submachine guns manufactured during World War II is estimated at more than 6 million. It could be charged by a curved magazine or a drum clipper, with the cartridge 7.62 x 25 Tokarev. The PPSh-41 was also widely used during the Korean War.