Statistics
Top speed: 35 mph (56 km/h)
Range: 280 mi (450 km)
Weight: 62 t (68.3433 tons)
Cannon: Royal Ordnance L11A5 120mm rifled gun
Crew: 4 (Commander, gunner, driver, loader

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History
The FV4030/4 Challenger I was first used in 1983 and served until 1990 for the UK, as it is still used by Royal Jordanian Army. It served as a replacement for the Chieftain tanks. Unlike the Chieftains, the Challenger I had composite, or Chobham, armor, which is the same armor the M1 line of tanks utilizes. The FV4030/4 is also known for having the longest recorded tank kill in history, which is more than 3 miles.

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Later Variants
The FV4034 Challenger II replaced the Challenger I and is still used today by the UK and Royal Army of Oman