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.
M16 Multiple Gun Motor Carriage The M16 Multiple Gun Motor Carriage, also known as the M16 Half-track, was an American self-propelled anti-aircraft weapon built during World War II. It was equipped with four 0.5 inch (12.7 mm) M2 Browning machine guns in a M45 Quadmount. 2700 were produced by White Motor Company from May 1943 to March 1944, with 568 M13 MGMCs and 109 T10 Half-tracks being converted into M16s as well.