Sub-Machine Gun: The Development of Sub-Machine Guns and their Ammunition from World War 1 to the Present Day by Maxim Popenker and Anthony G. Williams (Hardcover.
Amazon.com: finnish suomi m31 receiver SAF Kommando 80% receivers now available.. that were modified by the German forces during WW2 for use with the Finnish Suomi M31. Receivers; Antique Gun Parts. RECEIVER TORCH CUT TO BATF SPECS The Suomi (Finland) submachine gun was developed by Finnish arms designer Aimo Lachti in 1920-1930 period and adopted by Finnish Army. Suomi m31 receiver
Finnish Suomi M31 9MM Parts Kit Part #KIT-M31
. 1931, or simply KP-31 (KP stands for Konepistooli - Automatic Pistol in Finnish language). Suomi . to achieve a fire rate reduction by using a simple vacuum valve.
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