Do you really want to hassle over a silly AR that was his originally. I would tell him to send you a hundred bucks to cover shipping and handling and a FFL that he wants it sent to. Get your FFl on your end to send it to his FFL and make him yellow sheet it again. Then go buy yourself a new AR. If it makes you feel better take it out and do about 20 mag dumps as fast as you can pull the trigger u till the barrel droops and the throat is cooked but I would not get a lawyer to try and keep something as trivial as a rifle.
