Suomi KP/-31 – Finnish Submachine Gun (3D Printed Model)

The Suomi KP/-31 is one of Finland’s most iconic submachine guns and is strongly associated with the Winter War and Continuation War. Developed from earlier Finnish designs and adopted in 1931, it earned a reputation for accuracy, controllability, and rugged performance in harsh conditions. At the outbreak of the Winter War, the Finnish Defence Forces had roughly 4,000 KP/-31 submachine guns in service. Its battlefield impact is often credited with changing how Soviet forces viewed submachine guns, especially in close-range fighting. Our 3D printed model captures the distinctive profile of the KP/-31, including its heavy receiver, perforated barrel jacket, wooden stock, and classic box/drum-magazine layout. A strong display piece for collectors of Finnish military history, Winter War equipment, and iconic Second World War firearms.