ORIGINAL: biscuit jake
You can get a Class 3 license (I think that is what it is) to get one. I hear that is quite costly tho. I like the piston gas system. The receiver looked just like another M16 (whoopdeedoo) but the similarity is cosmetic. Barrel is under 11" so that makes it a law enforcement only piece.
Actually, no you can't. These are new production full auto registered recievers so they're not saleable legallyexcept toLE or military. Bbl length doesn't automatically make it LE only. A proper tax stamp for such a Class III firearm (SBR)is obtainable bycvilians.