Having an unregistered gun (where required) will still be illegal.
Any homemade, unregistered gun would be illegal. If you get caught you are in trouble.
The gov't just outlaws 3D guns and you have another law on the books.
Yes, you could make your own just like you could now go to a gun show and buy one.
Not sure why 3D guns would make a difference.
Most of the whackjobs usually have legally acquired guns anyway.
I'm waiting for this...