So I have received the “GIFT” email from Xbox giving me a code for all the specializations. I redeemed the code and I was able to rank up even more and view all the specializations, but once I reached SR80 I went onto Specialization so I can pick my next specialization and Everything was missing 
The only specializations that were viewable were the 4 that I have completed.
I tried re-downloading the add on (alpha…add on) that gives you all the specializations but I still didn’t work.
WHAT SHOULD I DO? HALO 4 is messing up man!!! WHAT THE HECK…