I would not contact law enforcement unless you happen to be feeling generous. I have never come out on a good end when dealing with the Alaska State Troopers on anything, especially when it involved firearms. (One was a gun which my FIL purchased from a fellow; the gun was one which had originally been stolen from me! It was stolen twice IOW.) I would either send the gun back so that it can be handled by law - if that's where they tracked it to, with reimbursement being made prior, or just hang on and wait and see what happens. It's very possible that the seller is trying to pull something shady.
