Bren light machine gun
The vehicle was modernized in 1920 and in 1924, resulting in the Rolls-Royce 1920 Pattern and Rolls-Royce 1924 Pattern. In 1940, 34 vehicles which served in Egypt with the 11th Hussars regiment had the "old" turret replaced with an open-topped unit carrying a .55 (13.9 mm) Boys anti-tank rifle, .303-in (7.7 mm) Bren light machine gun, and smoke-grenade launchers.