At what point do you become a manufacturer?
I know that without any problem you can make parts like sights, hammers.
At some point you would need licensing in order to stamp a serial number and register.
Is it the lower or receiver, the barrel, the action? Or are they all considered parts until assembled? I would assume that anytime you need a NIC check to buy the part would be a pretty good indication. I ran into a friend who says he has the license required to manufacture and it has peeked my interest. Before I get involved with an attorney I would like to know what questions to start asking.