German MP-40 submachinegun

This is a German MP-40 submachinegun (Maschinenpistole modell 40). This gun a BNZ code 1941 MP made in Steyr, Austria. It shoots 9mm Luger parabellum pistol rounds at 500 rounds per minute. The first shooter is my brother, who is an expert shooter with a rifle. This was his first time shooting a submachinegun though.