Well, its only the black smith armor shader, but I got it for pre ordering advanced warfare and I never got the armor shader. I remember entering the code and playing but I didn't even know what It was at the time. I didn't delete it if you even can delete it but I was just realizing it today after not having it. Is there any way I can get the armor shader?
If you entered the code you would have needed to pick it up at the Postmaster. If you did that then it will be available for purchase at the Special Orders vendor in the tower. If, for some reason, it was available to one of your characters at the postmaster and you deleted them before picking it up then you will not be able to purchase it again on any characters.