The description below is taken from the Airfix catalogue this kit was first seen in. There is also extra information underneath the main catalogues description including the changes to the name of this kit in the catalogues.

This outstanding American artillery weapon is now available in kit form with many of the working features of the real gun. Realistic metal parts and springs plus flexible tyres are included. Simulated recoil action, opening breach, elevating and swiveling barrel together with a movable split trail are notable points of the completed model. - Taken from the 13th edition catalogue (1976)