Originally Posted by Harry94
Treyarch did a Q&A and it does have camos, to get it diamond you need all the other SMGs gold. If you don't have the SMGs good yet though and you have the peacekeeper, getting good on all the base SMGs is enough to get the base SMGs diamond. So it's sort of exclusive, but to get it diamond you need the others gold.
Sounds tedious x_x
What if you're trying to get the Diamond camo for base SMGs? (Would you have to get the Peacekeeper to Gold if you have access to it?)