Who designed the German MP 40 submachine gun known as Schmeisser?

Heinrich Vollmer
725
Hugo Schmeisser
2700
Hans Grüber
549
Paul Mauser
1015
The MP 40 designed in 1938 by Heinrich Vollmer Its advanced and modern features made it a favorite among soldiers and popular in countries from various parts of the world after the war. It was often erroneously called "Schmeisser" by the Allies, despite Hugo Schmeisser's non-involvement in the weapon's design and production.
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