The British FV4030/4 Challenger 1, was the main battle tank (MBT) of the British Army from 1983 to the mid 1990s, when it was superseded by the Challenger 2. It is also currently used by the Jordanian Armed Forces as their main battle tank after heavy modifications. The variants for the Jordanian military are upgraded to Challenger 2 standards and are undergoing upgrades using an unmanned turret called the Falcon Turret.