Comparing: Centurion Action X vs. FV4202

The Action X turret was planned to be used for later variants of the Centurion tank. One prototype of the turret was mounted on the chassis of the Centurion Mark 7, and another was used for ballistic trials. The vehicles with the Action X turret never entered mass production or saw service.

Experimental tank on the basis of the Centurion medium tank. The vehicle was in development from 1956 through 1959, but never saw mass production. Technical decisions and innovations implemented in the FV4202 became the basis for the FV4201 Chieftain.