Actually, it's "MOPP". Mission Oriented Protective Posture.
However, it says as much on the box: CBR is Eurospeak for NBC. (Nowadays called CBRN: Chemical, Biological, Radiological, Nuclear)
Agreed, though, on the premise that it's a very old crew. However, I'm not convinced that you can't use the Dragon AIM kit if you want to make a late 80s tank, it depends on which of the options you choose to install. For example, you obviously won't want the BFT antenna and would probably want to use the 'flat' blowout panels.
NTM