All tank turrets are modular. Even the current Challenger. It's just a matter of cost to actually replace what's in them.
military wrote:As a guess about NMA, I believe the kits of appliqué armour used in Iraq in 2003 for Challenger 2 were the same kits used for Challenger 1 in Iraq in 1991. Some of the appliqué armour goes on the front hull, so maybe they are replacing that?
In 1991 the Challenger 1 Mk2 and Mk3 were equipped with 200mm of VARMA Series 3 plating on the sides, and the ROMOR-A ERA on the front.
Come 2003, this was VARMA Series 6 (Sometimes known as 2E standard, note not the same as the 2E "export" tank of the same name.) on the sides with ROMOR-A on front.
Later on, this shifted to be known as various standards from 2F, 2G, 2H, to the latest 2I as the external composite changed formula and design layering. (2F introduced a 20mm backing plate for example, 2H onwards has a 30mm 'shelf plate' behind the 200mm composite). ERA was also added, while the frontal nose was adjusted from the late era 2F onwards to bea composite block of the same Dorchester based material.
It's all a massive variety, but it's certainly not the same as the original 1991 one. Details emerged from a Gunnery Instructor I occasionally chat to elsewhere, although most of the above can be seen in the Haynes Operating manual anyway, so it's open knowledge.