Explaining how the new attachment unlock system works.
Weapon attachmentshave seen a revamp inModern Warfare 2.
It is unlocked by levelling weapons in multiiplayer.
(We have more on Platforms and Receivers in ourhow to unlock all weaponsexplainer.)
With a Weapon Vault, Weapon Platform-specific attachments are unlocked for use immediately.
Getting stuck into multiplayer?
We have explainers onhow long the Modern Warfare 2 campaign isand allsafe code combinations.
