From what i understand they are considered a destructive device in either semi or full auto format. Something to do with how easy it is to convert to full auto. Another one of those irrational batfe rulings.
I could be wrong though. The one i saw for sale last year needed a batfe tax stamp and was semi auto.
The saiga12 works better, its lighter better capacity and can use drum or magazine, and no federal headache
"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