No one other than youtubers and bungie people have them... And maybe, [b][i][u]maybe[/u][/i][/b] a few normal people who went to e3... Anyone who says they have codes is most likely lying so be ware!
You originally got Blacksmith for pre ordering Call of Duty: Advanced Warfare, FYI
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It's just a way for a lot of kids to say " mom look at all the replies I got."