The STEN name came out of names of the designers (R. V. Shepard and H. J. Turpin) and from the factory where they worked (Enfield arsenal). It was one of the most crude and ugly and simply, but effective submachine guns of the WW2. Almost 4 millions of STEN guns of different versions were made between 1941 and 1945. STEN guns were made not only in Royal Small Arms factory in Enfield; other makers included famous British gunmaking company of the time BSA Ltd, as well as Royal Ordnance Arsenal in Fazakerly, England, and Long Branch Arsenal in Canada.
The STEN Mk.II submachine gun was most widely made gun in entire STEN series, with about 2 millions of Mark 2 being made during the war. It was slightly smaller and lighter than Mk.I. Basic design was the same as Mark 1, with omission of all wooden parts of Mk.I and shorter barrel jacket, which made the Mk.II lighter than its predecessor. Magazine housing could be rotated for about 90 degrees down to close feed and ejection apertures during transportation and off-battle carry (this feature caused much troubles as the rotary unit was not very durable and magazine could be misaligned during combat, what led to feed malfunctions and jams). Another source of problems was magazine spring, so magazines were routinely loaded with 28-30 rounds instead of "full capacity" 32 rounds to reduce strain on the magazine spring.
Weapontype: Submachine Gun
Manufacturer: RSAF Enfield, BSA Ltd, Royal Ordnance Arsenal, Long Branch Arsenal and others
