Halo 5 Guardians armor

I got the Cairo station achievement in Halo 2 anniversary and was supposed to unlock the Mark 6 scarred variant for Halo 5 Guardians, so why hasn’t that happen yet?

I think this was one might take some time, I remember a while back a lot of people were complaining about this not unlocking so give it time. If it doesn’t unlock then recommend you ask support about it since this is only the community forums.