Mezue nkebi ahịrịokwu a: Iji mezuo ihe ọhụrụ a chọrọ, George William Patchett, bụ́ onyeisi ndị na-emepụta ngwá agha n'ụlọ ọrụ Sterling Armaments Company nke dị na Dagenham, wepụtara ngwá agha ọhụrụ ná mmalite afọ 1944. Ngwá agha mbụ nke Patchett yiri nke Sten n'ihi na a na-etinye aka ya (na oghere ọ na-aga azụ na azụ) n'otu ahịrị na ọdụ ụgbọ mmiri ọ bụ ezie na e degharịrị ya n'oge na-adịghị anya ma bulie ya gaa n'ọnọdụ dị ntakịrị. Ndị agha ahụ ghọtara ngwa ngwa Patchett nke ọma na ntụkwasị obi dị elu ma e jiri ya tụnyere Sten wee nye iwu maka ihe atụ 120 maka ule. Ka ọ na-erule ngwụsị nke Agha Ụwa nke Abụọ, ụfọdụ n'ime ndị a ikpe samples e ji mee ihe na ọgụ site airborne agha n'oge Agha Ụwa nke Abụọ.
agha nke Arnhem na ndị agha pụrụ iche n'ebe ndị ọzọ na Northern Europe ebe a maara ya n'ụzọ iwu Patchett Machine Carbine Mk 1. Dịka ọmụmaatụ, a na-ebu egbe egbe Patchett (nọmba serial 078 ma ugbu a na-edebe ihe ngosi nka nke Imperial War Museum), nke Colonel Robert W.P. Dawson na-eme mgbe ọ bụ onye isi ndị isi nke 4 Commando, n'oge mwakpo ahụ na Walcheren dị ka akụkụ nke Operation Infatuate na November 1944. Ebe ọ bụ na Patchett / Sterling nwere ike iji magazin Sten dị larịị yana atụmatụ Sterling gbagọrọ agbagọ, enweghị nsogbu mmekọrịta.