u/Alive-Sentence-8390

I'm trying to get some old camos, just for fun. I have 3 BO6 sniper rifles with the golden camouflage, the first one, but the second one is locked, not recognizing I already have 3 different snipers at that level, so I can only obtain the gold one and nothing more.

I have also watched weapons from MWII, Victus as example, which are completely locked, all camos appear as locked.

Is everything bugged? Or is it intentional?