I think youre misunderstanding me here; I'm talking about in the meantime while it's still a pistol and you're waiting for your Form 1 to come in.
Having a carbine or rifle buffer tube on it while it has a barrel shorter than 16" will make it an SBR. It doesnt matter if you have a stock on it yet; simply having a tube that can accept a stock counts as a stock.
If you use that A1 buffer tube with your 9" Blackout upper it will be illegal. But you could use that A1 buffer tube as long as you have a 16" upper on it.
Of course, all this will be legal once your Form 1 comes back.
0331: "Accuracy by volume."
Last edited by Theohazard; December 24, 2013 at 08:35 PM.