^ This, in a nutshell.If you buy a complete lower with a rifle or adjustable stock it will be classified as a rifle. If buy a complete lower with pistol brace or tube it will be transferred as a pistol. If you buy a stripped lower it is transferred as "other" and can be used either way.
My understanding is if its transferred as pistol it can be turned into a rifle and then back to pistol if you wanted. If transferred as rifle it must stay a rifle.
I'm sure someone will be along with links to actual law
You'd have to ask him/her and hope they tell the truthSo, if I bought one at a truck stop from a guy I met on Ingo, how would I know?
Well, assuming they may knock our doors down one day, if I buy a lower with no paper trail, what is, legally, to stop me from turning it into a pistol?