I think I have a unused First Strike Map pack code.
You can have it for free if you still play it.
(A little back story)
My first copy of Blops wasn't able to be read by my ps3. Without knowing this I went ahead and bought the First Strike Map pack and DLd it.
Picked up a used copy of Blops off of EBay. Works great. It came with a First Strike map pack. The seller said he did not use the code.
Whoever wants it can try it and see if it works.
First Come First Serve. Message me here or on PSN