Is it classified as an sbr?
They aren't even a firearm, and can be shipped right to your door.
If you were to cut the barrel shorter than the 16" they come with, you'd have to put it on an SBR frame to be legal, or remove the stock and use it as a pistol. Otherwise, with the 16" barrel, they just make your pistol a rifle (well, carbine technically).
CashisKing, be careful lightening the barrel profile too much. I cut down one in 357 Sig that has the bore off-center in the middle. It shoots great and doesn't seem to hurt anything, but if you slimmed it down too much, it could be a problem. Most of the weight on these is in the bolt anyway; you don't want to lighten the bolt.
