Improved MP 18 with selective fire capability and a box magazine instead of snail drum. Widely exported and copied — the British Lanchester and Japanese Type 100 are derivatives. Type: Submachine Gun Action: Blowback Caliber: 9mm Luger Capacity: 32 Year introduced: 1928, Germany Weight: 80 oz Overall length: 32" Status: Discontinued Military use: Yes Intended use: military