These mass shootings always happen in "gun free" zones" Anti-gun propaganda: 'assault rifle' 'weapons of war' 'high capacity' You regurgitate media manipulated buzz words. The AR-15 is one of the most popular rifles in the US, not only for defense, but it is used for hunting and sport because of it's modular. The standard magazine is 30rnds. You want to ban a magazine? On a 3d printer one can make any magazine they want. Gun control laws work as well as drug laws... they don't. One not need justify what is guaranteed in the bill of rights. But if we are playing the how can you justify it game.Can you justify having a swimming pool? Do you know how many children die every year from those or how about alcohol? Do you know how many children die from drunk drivers? If you want to save the children then call for all things that isn't required for living that cause children death to be banned.