Regulation will not stop criminals from obtaining guns. They will still get them on the black market and most often get better weapons you can get legally depending on state laws. Such as my state and alot of states fully auto is illegal yet if you know the right people and have cash you can go out and buy a fully auto M16 if you would like. If you put harder regulations out there for guns bought in sporting good stores or gun shows the illegal markets are not going to follow that and they will still be distributed among criminals. Also i am sure most weapons being used in most deaths are not registered to the user of the weapon, it is stolen or purchased illegally. Therefore with our rights to have guns the people need to be more pro active in securing their weapons from theft. Even if we had a strict gun ban they will still be in the criminals hands.