Just put the gun to use and it’ll get better for you.
That’s it! You don’t need to use certain attachments or perform certain feats to unlock anything. Each and every gun has a maximum level of 31. Yes, you read that right – your guns level up now. Attachments, Proficiencies, and Camo all fall under this banner. There are several things you can unlock for each gun. What replaces them is a little different, but just as effective.
Gone are the challenges to kill people through walls, earn specific headshots, or perform other feats to unlock other attachments. Gone is the fake currency of Black Ops charging you for your unlocks. Modern Warfare 3 changes up the way weapon unlocks work in Call of Duty.
