What was the most deadly infantry weapon world war 2?

The most deadly infantry weapon of World War II was arguably the Soviet PPSh-41 submachine gun. Known for its high rate of fire, the PPSh-41 could deliver devastating firepower in close-quarters combat, making it particularly effective in urban warfare. Its reliability, combined with a large 71-round drum magazine, allowed soldiers to suppress enemy positions effectively. This weapon contributed significantly to the high casualties experienced on the Eastern Front.