The Charlton Automatic Rifle was to act as a substitute for what First World War-era light machine gun of US design?
Lewis gun The Lewis gun (or Lewis automatic machine gun or Lewis automatic rifle) is a First World War-era light machine gun of US design that was perfected and mass-produced in the United Kingdom, and widely used by British and British Empire troops during the war. With its distinctive barrel cooling shroud and top-mounted pan magazine, the Lewis served to the end of the Korean War. It was also widely used as an aircraft machine gun, almost always with the cooling shroud removed, during both world wars.
Vickers T-15 light tank The Vickers T-15 light tank, full designation Char Léger de Reconnaissance Vickers-Carden-Loyd Mod.1934 T.15, was a light 4-ton tank of the Belgian Army. They were built by Vickers-Armstrong in the UK to the design of the Light Tank Mark III and outfitted with their armament in Belgium by "Fonderie Royale de Canons" (FRC) at Herstal. It entered service in 1935, and was used by the Belgian Army during the Battle of Belgium in May 1940. Its main armament was a 13.2 mm Hotchkiss machine gun. The tank was intended as a replacement for the venerable but obsolescent Renault FT. Only 42 were produced.