finished cairo achievement but didnt get armor

Games Halo 5: Guardians
1

i finished the cairo station achievement on mcc but when i logged back on halo 5 i didn’t get the armor (mark vi scarred) please helpp…

2

I have the same issue. Did you ever find a solution to this? My guess is that it had to be done prior to Halo 5’s release perhaps not sure.

3

Same here. Not to mention that the Mark VI [GEN 1] and my NIGHTFALL still don’t show up in my collection.