mark 5 helmet not showing in game

i recently downloaded the i.finity armor pack just to equip the mark 5 helmet to my spartan its always been my favorite and yet even after buying this dlc when i play spartan ops (im not one to play matchmaking that much) when i see my spartan in 3rd person by death or turrent he is wearing the recruit helmet in the game i have a serious issue with this is i paid for this bundle just for 1 helmet and it wont evwn show in game why is this and when will they fix it

The new armor is only usable in War Games. That fact is confirmed by 343, and is not a glitch. So they will most likely not be changing it.

As someone who prefers spartan ops to war games this is a disappointment and i feel that isnt very fair but thank.you for the information