said by tshirt: Your constitutional right does not excuse you from reasonable and responsible regulation
There already is and has been for about 80 years. It's called the National Firearms Act, which prohibits things like machine guns (automatic) weapons, sawed-off shotguns, bombs, missiles, large bore rifles, etc.
Just how many of the 80 million or so gun owners are involved in killing someone or are suggesting they should have things already banned by NFA? Point being, stop lumping the 99.9998% of good folks in the category of the lunatics and criminals that commit these acts by implying we are not reasonable and responsible.
People are easily distracted by shiny trinkets and our perception of danger is easily distorted by rare events.