he superb Challenge 2 (CR2) is the British Armys Main Battle Tank. CR2 is based on the Challenger 1 that served with distinction on operations in the Gulf War and the Balkans. Only 5 per cent of Challenger 2 components are interchangeable with its predecessor; over 150 major modifications include a completely new turret, L30 CHARM 120mm gun and second generation Chobham armour. Challenger 2s Thermal Observation and Gunnery (TOGS) displays a magnified image for the commander and gunner. The commander has a gyrostabilised fully panoramic sight with laser range finder and thermal imager. The gunner is equipped with a gyrostabilised primary sight with a laser range finder and coaxially mounted auxiliary sight. The drivers position has an image-intensifying day and night periscope, and the loader has a day sight.
