Why I said "you cannot use usps" in the paticular case of "can I ship and action" and what some are missing, especially one person who called bull on me is the bare receiver RP asked about. It IS "any other firearm" it is a "firearm" by definition, "it can be concealed on your person" annnnnd it can be either a rifle or a handgun if not in a rifle config no matter how it was "born" and which FET was paid on MFG.

I've been doing this all my life, first ATF book, 1972. Licensed dealer, licensed manufacturer, licensed SOT during those years.

Now I explained it. If anyone wishes, mail anyway you like. I won't answer any more threads on the subject, interpret whatever floats your boat.

If you truly want an interpretation, ask the ATF and get it in writing, signed.