On September 13th 1994 then President (remember that President is not title that sticks with you, the only US title that is life long is Senator) William Jefferson Clinton signed the Violent Crime Control and Law Enforcement Act of 1994. He did this to save the children.
In this Act was a ban on "High Capacity Magazines," i.e. any magazine that held over 10 rounds for a semi-automatic hand gun or rifle, and restricted shotguns to only three rounds in the tube.
That law was thankfully allowed to "sunset" in September of 2004. Naturally you would think that because people could now legally buy Hi-Cap Magazines, the schools would be full of dead children.
Not so. There are fewer school murders today than there were during the ban (remember that the ban did nothing to prevent the Columbine Massacre that occurred four years after the Act was signed).
Gun laws only take guns out of the people who shoot back at the bad guys.