Originally Posted by Rochard

Outlaw all firearms except for shotguns and bolt action long rifles. Shotguns can be used for home protection - in fact, they are ideal for that - and bolt action long rifles can be used for hunting and target practice.

Problem solved. You will have a weapon for home protection, and also something for hunting. In the mean time, no one is going to walk into a church / school / movie theater with a shot gun or long rifle to shoot and kill people.

Then arm the police with handguns and M4 rifles.

You are welcome.