Ok so first im sorry if this question has been asked, I tried searching and google but did not find the answer to my specific question. I am wanting to get an ar pistol and would order it in 2 parts. First the complete upper to my door, second a complete lower to my FFL. Now I know once a rifle always a rifle, BUT if you buy a lower be it complete rifle, complete pistol, or stripped(with the exception of a pistol lower specificly marked pistol) it is filled out on a 4473 as "Other" like a pistol grip shotgun. So now my question. Can I buy a complete rifle lower and before it has been attached to an upper (so that its not technically a complete firearm/rifle) switch out the stock to a pistol buffer tube then complete my pistol? My thought process is that never being attached to an upper it still makes it a receiver and not a firearm. The batfe would not know the configuration of said lower before attaching my upper. Is my thought process sound or am I missing something? Thanks in advance for your input.
