This probably sounds like a flippant question, but I'm in my late seventies so have to think of this kind of thing: is there any resale value to a make-it-yourself suppressor? Or even a commercial one? It's in your name, with a tax stamp in your name, and if you or your estate have to dispose of it some day, how do is this done? Seems like a rather complex issue.
The person purchasing would still have to submit their own form4 and await for approval before taking possession.
The suppressor would have to be transferred from you or your estate to the purchaser through an SOT too.