Was the Russian PPSh-41 a copy off the Finnish Suomi KP/-31

by AwesomeKillerKevin

The KP/-31 and PPSH look awfully similar in design, and Finland produced its own version way before the Soviets did. (With the exception of the soviets adding the drum magazine)

How did the Soviets acquire the design for their PPSH? Did they just copy it off the KP/-31?

StalevarZX

No. PPD was basically a copy of suomi and was as bad as suomi. PPSh was specifically designed to replace bad suomi clone, it was a very different gun.