A military rifle capable of piercing armor from over a mile away is too readily available to civilians, and could end up in terrorists' hands, say critics of the .50-caliber weapon that is for sale in 49 states. Correspondent Ed Bradley reports on the big gun that was recently banned in California for 60 Minutes, Sunday, Jan. 9, at 7 p.m. ET/PT. "I think it's a great thing on the battlefield," says one of the weapon's chief critics, Tom Diaz of the Violence Policy... (GunPolicy.org)