Unlocking camos is a big part of the Call of Duty grind, and Modern Warfare 3 launches with some beautiful new completionist camos to earn for both multiplayer and Zombies mode. Our guide will walk you through the steps needed to unlock these coveted weapon camos.

How to unlock MW3 mastery camo challenges

Modern Warfare 3's camos are divided into two types: Base and Mastery. Before you can unlock the fancy mastery camos, you'll need to acquire base camos first. There are over 140 base camos for the MW3 weapons, and they are all universal camos. Meaning, once you unlock a base camo for one weapon, you'll be able to apply it to all other weapons in your arsenal.

There are a maximum of four base camo challenges for each Gunsmith-compatible weapon in the game, and you'll get access to these camo challenges as you level up the weapon. These objectives vary from weapon to weapon, but these are simple challenges like getting a certain amount of kills, double kills, and such.