Once you allow the the 2nd amendment to be changed then you open the door for them all to be changed!! It's a slippery slope people. Weapons are neither good nor bad; they are just tools that allow we the people to provide a source of food for our families and to defend our selves, families and properties.
It's not the weapons or the manufacturers of these weapons killing people, it's the idiots behind the weapon pulling the trigger without adequate training or knowledge of firearm usage. Problem is the bad guys don't buy their weapons legally to start with or they make them. So added regulations on the law abiding citizens only hurt the good guys.
When I was 5 yrs I got my first 22 rifle for my birthday, my father took me out the following morning to teach me how to respect the thing it was and how to use it.
todays kids lack that training most have grown up with no rules or boundaries. This is where the problem is! Society needs to re-learn the meaning of what the boundaries are and enforce our rules(laws) we knew growing up if we broke the rules(law) that the consequences were severe and unpleasant.