It is June 1st 2013 and i preordered the lim. edition of halo 4 and when i got it i forgot about the specialization unlock that comes with it. many months later i check my email and its there so i go to redeem it and it says its already been used. WTF?! i would love to receive what i paid for because there is no expiration date on it. Someone please help me get this code because its really bugging me because this code was the reason why i paid 40 extra dollars for this game 
You’ll be happy (maybe) to know that all specializations were unlocked for all players, including yourself, back in February. A code is no longer required.