Posted by: JDYeash937 MkII
You need to buy the regular COLLAR/BREACHER chest for 8,000cR, then the COLLAR/BREACHER[R] becomes available to unlock for an extra 75,000cR. It will only appear after purchasing COLLAR/BREACHER, and will appear at the very bottom of the list of chest pieces.
what he said and you should probably post this in the reach forum