Nothing you do, whether it's outlawing high capacity magazines, banning everything to a sling shot, mental health checks, etc., is going to stop a person from killing if they choose to. There's this argument: it may slow a person down from killing more people if they only had 10 bullets. You're delusional. Even though a killer is sick, don't count them out for stupid! At least if you have a gun, you have some kind of protection. No gun and you may very well die!