Thanks for the advice. I might try and see what serial numbers I can find on the bolt and see if they match. I think these have been sitting there for a few months now, and I am pretty sure that they will probably stay there for a while longer. If they are still there after a few more months, I might try and see if i can get them to lower the price.
Are there any other places that would have a serial number to check, besides the receiver, forward barrel band, and the bolt?