If I apply and get the right background checks, I believe I can own and operate a grenade launcher. Same with fully automatic, even a tank, minigun, and others. It is just more difficult since you have to have a more extensive background check. However, I bet most of the mass shootings that have happend could have passed those checks.
Again, you can't remove someone's rights with out due process. Period. Anything you suggest that violates that principle is a non-starter.
Looked it up (grenade launcher)
It is in fact completely legal for a private citizen to own a fully functioning grenade launcher. Gun laws regarding these weapons are pretty quirky – a 37mm launcher, which is often used for flares, is regulated differently than a 40mm launcher like the big boys use. To get one of the latter, you need a permit from the ATF, which requires a ton of background checking. Owning grenades to shoot from it is a little trickier – because they’re classified as destructive devices, you need to find a chief law enforcement officer in your area who is willing to sign off on you owning one, then pay a $200 tax per grenade, which is a little steep for just one boom. The 37mm isn’t classified as a weapon, but there isn’t explosive ordinance that works with it.
Read more at http://www.craveonline.com/mandator...apons-you-can-legally-own#dgMfAgax0GQm91gZ.99
So, when I read that, it is pretty easy to understand why no one is using grenade launchers to perpetrate these mass casualty events. Can you tell me if changing the law to put semi-automatic weapons in the same category would "remove someone's rights with out due process"? If your answer is "yes", please explain.