Children who are too young to drive one of the family cars to school are probably too young to take one of the family guns to school.
Convicted criminals who are considered too dangerous to possess guns are also too dangerous to be running around loose.
I favor restrictions on actual WMDs - nuclear bombs, bioweapons like anthrax and plague, and many poison gasses and toxins. (Not to include things like bug killer and CO
2.)
And I really would not be happy to see things like Stinger missiles, land mines, and satchel charges for sale with no questions asked at the local Walmart or Costco.
And also . . . also . . . well, I'm having a hard time thinking of more right now.