Calibre/cartridge: 9 mm Parabellum Magazine capacity: 8 rounds Length: 286 mm Length of barrel: 130 mm Weight unloaded: 0.96 kg Muzzle velocity: 381 m/sec Maximum effective range: 30 m Original manufacturer: Mauser-Werke AG, Oberndorf-am-Neckar This was an emergency pistol design that was assembled from simple steel pressings with a minimum of machined parts. Only prototypes were produced before the end of WW2. These prototypes had an unusual locking system that directed the propellant gases forward to retard the barrel until the bullet had left the muzzle. Some prototypes were also manufactured by Walther and Gustloff-Werke. These prototypes had slightly different actions.