Produced in quantity during World War II, the STEN Gun was one of the signature weapons of the Commonwealth of Nations. While notably rough in appearance, the STEN was a simple machine that provided good firepower and could run in harsh conditions. Blade front and fixed peep rear sights, with "STEN MK II" and the serial number on the magazine well, "ENGLAND" stamped up the left side of the trigger housing, a "R A" (semi, full) selector switch and a tubular buttstock. A plug has been welded into the breech, and the barrel collar has been spot-welded to the tubular frame.