KONEPISTOOLI M/31 
- TYPE: Submachine Gun
- CALIBER: 9mm Parabellum
- LENGTH: 34.25 in (.87 m)
- LENGTH OF BARREL: 12.5 in (.3175 m)
- WEIGHT: 10.3 lb (4.68 kg)
- MUZZLE VELOCITY: 1,312 ft (400 m) per second
- FEED: 20-, 50-, and 71-round box or drum magazine (450rpm)