Unlike multiplayer, though, at least Season 3's Ranked Resurgence offers you a new map to grind: Rebirth Island. Here's all the MW3 Warzone Ranks in order, along with their SR requirements ...

This MW3 SMG is one of the most mobile weapons in the game, allowing its users to play aggressively. This is especially viable on smaller maps like Rebirth Island and Area 99. As for the stats ...