 During World War I, a machine pistol version of the Steyr M1912 called the "Repetierpistole M1912/P16" was produced.It used a 16-round fixed magazine loaded via 8 round stripper clips, a detachable shoulder stock and a rather large exposed semi-auto/full-auto selector on the right side of the frame above the trigger (down = semi & up = full).It fires the 9×23mm Steyr cartridge, with a full-auto rate-of-fire of about 800 to 1000 rounds per minute.