

The three-kilogram, all-metal weapon fired eight rounds per second from a horizontally-loaded, 32-round magazine. Cleverly chambered for German 9 mm pistol ammunition, the Sten was effective to about 100 meters (300 feet).
At the time, each Sten gun cost as little as £2 ($10) to produce – roughly equal to about $130 or £80 today. By comparison, the American M1A1 Thompson went for a staggering $200 per unit in 1940!
And while by October of 1940, Hitler had postponed his plans for a cross-channel invasion, Allied factories continued to crank out Stens by the thousands and would do so for the next five years. In fact, nearly 5 million Stens were manufactured before the end of 1945. The weapon would serve in every theatre and go on to become the most recognizable British small arm of the war.
- What’s In a Name? — “Sten” is actually an acronym for its inventors: Reginald Shepherd and Harold Turpin of the Royal Small Arms Factory of Enfield(Shepherd, Turpin and Enfield = “sten”).
- The Simplest SMG — Made from cheap, stamped-metal parts and requiring only a bit of welding, a single Sten could be produced at a workbench by a semi-skilled labourer in few hours — a fully outfitted factory could produce hundreds of the weapons in a shift. Early variants of the gun were built with fewer than 50 parts. What’s more, stens required almost no oiling, making them a snap to maintain in the field.
- Untraditional — Awkward, the Sten’s all metal construction, from the tip of its stubby barrel to end of its skeleton butt stock, was a clear departure from the more elegant looking American Thompson SMG or the Royal Navy’s Lanchester (which itself was a direct copy of Germany’s First World War era MP-18 ‘machine pistol’). Even Germany’s entirely utilitarian looking MP-40 was considerably more handsome than the ungainly Sten. Despite this, the British public adored its homegrown submachine gun.
- Post War Stens – The British army continued to use the weapon into the 1960s, as did a number of other militaries the world over. Belgium, Israel, Jordan, India and Pakistan all either used British-built Stens or produced their own knock-offs for decades after the Second World War, as did Argentina, South Vietnam, South Africa and Indonesia. During the 1991 break up of Yugoslavia, Croatian nationalists manufactured a domestic Sten-inspired SMG known as the Pleter 91