America's gun: Sales of AR-15s soar

At the GunRunners Gun Show outside Atlanta, the line stretches out the door and around the corner. Dozens of people are waiting, ready to fork over big bucks for everything from pistols to high capacity magazines.Here, the hottest seller isn't a shotgun, handgun, or even a pair of Angie Whitaker's .22-caliber bullet casing earrings. It's the AR-15 semiautomatic rifle."We probably brought maybe 100...