This automatic pistol is essentially a modified version of the Sterling L2A1 machine gun adopted by the British armed forces in 1953, the primary differences being a shortened barrel (4 inches versus 7.8 inches) and the lack of a butt stock.
The Mk VII fired a 9 mm Parabellum round and was issued with a 10-round magazine, although the housing accepted the L2A1 20 and 43 round magazines as well. Like the machine gun, the Mk VII fired from a closed bolt and was recoil operated.
The Mk VII fires a 9 mm Parabellum round and was issued with a 10-round magazine, although the housing accepted the L2A1 20 and 43 round magazines as well.
Like the machine gun, the Mk VII "A" series fires from a open bolt and is fully automatic. The "C" series Mk VII fires from an closed bolt and is semi-automatic only.
The Mk VII had many shortcomings as a pistol and offered no advantages over the machine gun version. The sights are the same as the machine gun, consisting of a square post front sight and a flip-over aperture back sight.