I've printed many guns, never bought plans for any of them.

That ideas should freely spread from one to another over the globe, for the moral and mutual instruction of man, and improvement of his condition, seems to have been peculiarly and benevolently designed by nature, when she made them, like fire, expansible over all space, without lessening their density in any point, and like the air in which we breathe, move, and have our physical being, incapable of confinement or exclusive appropriation.

He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me.

― Thomas Jefferson

The great thing about 3d printers is that they allow our right to free expression to protect our right to self defense.

It should be clear by now that the constitution isn't doing shit on that front.