The very worst thing that can happen is that a single American own a gun! THIS IS AWFUL! We need to ban guns, steel, lead, chemicals, schematics, manufacturing machines, hands, and people, because all these things result in guns. If you shoot at the sun with a .45 caliber, you will put it out. If you shoot into space, you will invariably hit an alien planet causing an interstellar war. Bacteria and germs can settle on guns, making them horrible sources of disease.
You are bad people.