The machine pistol may be fitted with a wooden (early), brown bakelite or steel wire shoulder stock (for the APB variant); otherwise, the weapon becomes difficult to control on full auto. The stock is attached via a T-slot cut into the rear strap of the pistol frame. The stock is hollowed out and can act as a holster, accepting the machine pistol inside, similar to the Mauser C96 pistol. A Leather sling and ammunition pouch were also supplied with the weapon.