I have cleared all of the M.C.C and I have yet to receive the armour for clearing it on legendary. is there anything else I need to do to get it?
Check customization in H5. It should be unlocked. Do not check your req inventory, it will stay locked in there for a while. If it is not available through customization, load mcc, and any game in it. Then remove it and restart H5. It should be in you customization menu.