Some interesting stuff about the Thompson Sub Machine Gun.
Despite its excellent test performance, the Thompson was not adopted for use by either the US Army or Marine Corps. Still, Thompson contracted with Colt for the manufacture of 15,000 guns, designated "Thompson Submachine Gun, Model of 1921". The 15,000 guns manufactured by Colt lasted until the eve of World War II. In 1940, the U.S. Army ordered 20,000 Thompson submachine guns; in 1941 the Army ordered an additional 319,000.
