Interestingly enough, the man didn't discuss ANY details at all, and did not WANT any details other than did I sell it and to whom. I would have thought that he would have wanted at the very least, my friends drivers license number and current city of residence, but he didn't. He only wanted my friend's name.
If he didn't ask for more details, he probably already knew them. Once he has a confirmation from you that the gun went from you to the person who reported it stolen, he has the complete history, your supplier>you>your friend.