augfc:Steyr M.12/P16 machine pistolConversion of the Steyr M.12 pistol for automatic fire, developed
augfc:Steyr M.12/P16 machine pistolConversion of the Steyr M.12 pistol for automatic fire, developed circa 1916. Fitted with a fire selector switch screwed directly to the trigger, holding down the sear when flipped down, and an extended 16-round magazine. Issued in limited numbers to Austrian troops on the Italian Front of World War I, only around 900 made. -- source link