I did some research on PASGT a few years ago but there is one thing I did not seem to find: Official designation.
That is to say, the M#, like we see with every other piece of military equipment I can think of, such as M9 bayonets, M16 rifles, M4 carbines, M18 smoke grenades, etc.
I find a few references to the helmet being "M88" or sometimes with the outdated "M-88" format. Nothing at all for the vest, though.
Slang terms and "PASGT" aside, what were the "M" designations (model designations?) for these two bits of kit?