iirc the golden pack a punch is the original first pack a punch built by jeb brown. also during tag ee the pap breaks and thats why (i assume to be sparagmos who was the person interested in the tech) fixed the pap machine but failed to fix its pap effects part which is what zykov fixed. hence vanguard not having AAT's on pap
You definitely missed a few unique abilities. I know there was a couple in CW but I'm forgetting, and in MWIII, a couple guns get triple mag size instead of double, the longbow shoots two shots at once, expedite and haymaker becomes fully auto, etc.
