Fast TTK in MW4 is less about chasing one magic gun and more about making the first bullets count. A weapon can look brilliant in the menu, then feel awkward once you're sprinting through a doorway, snapping onto a target, and fighting recoil at the same time. I've found that short, repeatable gunfights are the best way to judge a build, and CoD MW4 Bot Lobbies can give you a quieter space to...