why cant i unlock armor in Halo 4??

For some reason I’m stuck on lever 22, I can rank up but I’m only getting the unlocks for level 22, I’m lever 23 now and it won’t give me the frost visor. any suggestions?

Get to SR29… when it actually unlocks.

Armour in H4 works the same way as in Reach. At a certain level, it becomes visible. At a further level, it unlocks for use. If you highlight it in the armoury, it will tell you what level you must be at to unlock it, or what commendation mastery you need.

Frost unlocks at lvl 29 I think…