Original Item: Used item. The Mk 1 lever has a rounded contact surface, as shown in the enlarged image. The Mk 1 lever is hard to find, and all Sten collectors should have one to show this aspect of the evolution of the gun. The Mk 2 lever is tapered. British WW2 manufacture, interchangeable with all marks of the legendary Sten gun. Original parts are hard to come by, so act quickly.