The stamp is not transferable. If you sell a silencer the buyer has to buy his own stamp.
You are Quibbling. Let’s compare FFL/SOTs? FBI only does fingerprints. Form 1/3/4 sit at Nikki Dudashs desk at NFA Martinsburg, WV until prints clear. NFA branch approves. I’ve met most of the NFA branch....even testified for AND against them. Have you? Almost Title 2 items are always transferable less 18 USC 922(o) items and state law prohibitions. Actual talking about tax stamps......geez ...