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![]() ![]() The bore and chamber are electro-plated with chromium to give a barrel life of 400 effective full charges. It is made of electro-slag refined steel. The barrel is 55 calibres long (L55), i.e., 55 times 120 millimetres, or 6.6 metres (21 ft 8 in). In January 2023, the UK government announced that it was donating 元0-armed Challenger 2 tanks to Ukraine, with the first deliveries made at the end of March 2023. Oman ordered 38 Challenger 2 tanks, in two batches in 19, and these were delivered armed with 元0 guns. The first of 386 Challenger 2 tanks were delivered for British service in 1994, with the tank certified for operation in 1998. In the event, the 元0 was not used to upgun Challenger 1 tanks, which were withdrawn from British service and sold to Jordan. CHARM superseded other projects, the EXP 32M1 experimental gun was re-titled the X元0E4 and accepted for production as the 元0 in 1989. The project had three components: the gun (prototype known as EXP32M1), developed by the Royal Ordnance Factory, Nottingham, a new depleted uranium (DU) APFSDS round, and a propellant charge for it. CHARM was intended to develop a new main armament for the Challenger 2 tank that could also be retro-fitted to the Challenger 1. Its design developed on the pre-existing Royal Ordnance L11A5 that had armed the Challenger 1 and Chieftain. ![]() The 元0A1 was conceived in the late 1980s as part of the Challenger Armament (CHARM) project for the Challenger 2 tank, then in development by Vickers. In 2023, 元0A1 armed Challenger 2 tanks supplied by the British were delivered to Ukraine. Challenger 2 tanks, and their 元0A1 guns, are operated by the British and Omani armies. It is an improved production model of the Royal Ordnance L11 series of rifled tank guns. The 元0A1, officially designated Gun 120 mm Tk 元0, is a British-designed 120 mm rifled tank gun, installed in the turrets of Challenger 2 main battle tanks. 元0A1 gun mounted in the turret of a Challenger 2 tank ![]()
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