The .40-caliber pistol used to kill a New York City police officer last year was bought in South Carolina on Feb. 28, 2008. A 9-millimeter pistol used in a murder-suicide in a Buffalo neighborhood had been bought in Georgia on June, 12, 2010, just 102 days before the double shooting. And a 9-milimeter pistol used to fatally shoot a couple on Long Island in 2010 was bought in South Carolina on April 10, 2009. Those are among the 52,915 guns used in crimes that law... (GunPolicy.org)