I am reading that a complete upper assembly AR is not an FFL item and can be directly purchased or mailed to your residence. On this same note, I am wondering if I purchase an upper assembly with a barrel under 16" (like lets say 8-12") and I keep it unattached from the lower assembly, would it be legal for me to possess in the state of Washington? I know in WA we are not allowed NFA weapons , although there is some weird laws, like being able to posses, but not shoot a silencer/suppressor. I know once you own a SBR that you have get some type of NFA permit or pay a $200 fee. Assuming, that I can even own a SBR upper, how would I be able to legally shoot the gun once I drive down to Oregon. My shooting range is in Oregon and I know I can legally shoot many NFA type weapons there. However, I know shooting a short barreled rifle is not legal without the tax stamp or whatever permit I need for the gun. Any ideas about the legality of owning the SBR upper in WA and the legal loopholes of being able to shoot it in Oregon at my shooting range?