Hickman, Kennedy (29 de agosto de 2016). «World War II: Sten»(html). Thoughtco(en inglés). Archivado desde el original el 14 de octubre de 2017. Consultado el 7 de marzo de 2018. «In an effort facilitate use of captured 9 mm German ammunition, the Sten's magazine was a direct copy of one used by the MP40. This proved problematic as the German design utilized a double column, single feed system that led to frequent jamming.»
Hickman, Kennedy (29 de agosto de 2016). «World War II: Sten»(html). Thoughtco(en inglés). Archivado desde el original el 14 de octubre de 2017. Consultado el 7 de marzo de 2018. «In an effort facilitate use of captured 9 mm German ammunition, the Sten's magazine was a direct copy of one used by the MP40. This proved problematic as the German design utilized a double column, single feed system that led to frequent jamming.»