Threatening to use a buyer's personal information in the way that Arn0ld threatened to do is inexcusable here. Regardless of what the "other side" of the story is, there is absolutely no reason to pretend to be LE, threaten to kill someone, blackmail them, and say you're going to put a bullet between their kid's eyes. He said he's going to BMR, so you can still buy from him there, but threatening buyers and misusing their location information is unacceptable.