Corio RE-X Pro

The Corio RE-X Pro is an optical attachment featured in Call of Duty: Modern Warfare III and Modern Warfare III. It is available after getting the .50 GS to level 4 in Modern Warfare II or getting the Haymaker to level 6 or through Armory Unlocks in Modern Warfare III. It can be put on all weapons that can accept attachments.
Category:Call of Duty: Modern Warfare II Attachments
Category:Call of Duty: Modern Warfare III Attachments