The light gun appears to owe a number of its features to the QF 25 pounder, unsurprisingly since RARDE was the successor to the design department, Woolwich Arsenal. Among these features are its vertically sliding block breech, and a box trail instead of a split trail; a traversing platform is normally used with it. Its comparatively light weight is also attributed to the nature of the steel used in the carriage and ordnance, and other weight-reducing features, including its narrow wheelbase.