Not entirely sure what your talking about. There are demil'd full auto receivers sold as decorative pieces or scrap restoring them is illegal. Not sure if that's what these are as you didn't include a link
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent