Originally Posted by Hagane
I've seen a video where it had a sight, but then again... it was a dev team.
The "no camos" thought though... might be spot on, since they'd have to make a special tier for it. (I'd think, anyway.)
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 gold yet though and you have the peacekeeper, getting gold 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.