OOB 024 -- US Army -- M1A2 Abrams

[SGTGunn]

Nope, no spall liners or such, just bare steel.

My experience is with the M1-IP, and the M1A1(Heavy). The M1A2 was out when I was a tanker, but it was still new, and only 4th ID had them. The roof armor thickness on the M1-IP, M1A1 and M1A1 (Heavy) are identical. I'm pretty sure it's the same for the M1A2 and M1A2 SEP as well, unless they have added some external appliqué armor since the start of OIF (offhand I haven't seen any pictures that would seem to indicate they have). All M1 model's turrets are basically structurally identical. The changes to the armor package are all "internal" in that they don't alter the dimensions or basic structure of the tank. The A1 & A2 models have a bigger gun, so there are changes to the mount, the coax ammo box and the main gun ammo storage, but since the tank was designed from the outset to take the 120mm gun, there are no major changes to the turret itself. The A2 adds the CITV in front of the loaders hatch and changes the commanders cupola and .50 cal mount, but that's about the extant of the major differences.