When you buy a lower that it has never been attached to an upper. It can go either way. If you make it into a pistol, later on you can switch it to a rifle and back again.
The same is not true if you make it into a rifle first. You can’t turn it into a pistol without violating federal laws.
The same is not true if you make it into a rifle first. You can’t turn it into a pistol without violating federal laws.