I can assure everyone in this thread that these guns aren't OP at all, I've unlocked all three, and all three suck. I'm continuing to use my M16 and AK74-U. The Procolot doesn't even stand a chance against the deagles, it can't even kill anyone with one burst. If you're thinking about grinding to get the FANG or BOS, I wouldn't bother (unless you hate every other AR/SMG in the game).