What was the name of the submachine gun used during World War II, that was designed by Aimo Lahti?
Aimo Lahti: Aimo Johannes Lahti (April 28, 1896 – April 19, 1970) was a self-taught Finnish weapons designer. Suomi KP/-31: The Suomi KP/-31 (Suomi-konepistooli or "Submachine-gun Finland", literally: "Machine-pistol Finland") was a submachine gun (SMG) of Finnish design used during World War II.
i don't know