Later Mk 3 model of weapon introduced in 1943, manufactured in both UK and Canada. The cheapest of all the Stens the Mk III barrel is not detachable. The receiver and barrel jacket made as one welded steel tube and the magazine housing welded to receiver. Thousands were supplied to the partisans.
Marks and Stamps: (Top of mag housing) STEN. M. C. MK.III (underside of mag housing) L B Serial no (Trigger guard) 4102| Accession Number: 159 | Period of Use: 1943 - 1960s |
| Type: Machine pistol/SMG | War Zones: Second World War; Korea; Suez; Malaya; Rhodesia; Ireland; Cyprus; Arab-Israeli |
| Country of Origin: | Type Date: 1943 |
| Manufacturer: | Serial Number: D 57501 |
| Manufacture Date: Unknown | Calibre/Ammunition: 9mm Parabellum |
| Weight: 3180g | Length Overall: 762mm |
| Cyclic Rate: 550rpm | Length Barrel: 196mm |
| Deactivation Certificate Number: DA 10192 |