The entire discussion is ridiculous. Anybody that thinks they can stop some mentally unbalanced person from shooting up a school by passing yet another gun restricting law is idiotic. No matter what kind of gun you think you can ban, a determined individual will just find a different type of gun to use. Even a six shooter pistol will kill people, and if a person has 3-4 of them he can fire off a hell of a lot of rounds before having to reload.
Nancy Pelosi wants to ban 'assault weapons' and made up her list based on what they looked like. The mean, scary looking ones have to be more dangerous, right? How much good will THAT do?
IMO the reason we see 'school shootings' as a thing is because schools are gun free zones and a determined psychotic is obviously going to go for the biggest dramatic effect. Where can you find lots of defenseless people in one spot, where you have lots of time to kill a bunch of them before somebody shows up who can shoot back at you?