the store and had a gun and asked for money and my grandfather reached for a gun he had and grabbed at the man's gun and it went off or he shot him twice and my grandfather fell to the floor. >> why did he feel he had to have a gun? >> because there are so many robberies in the area and he thought he needed it for protection. >> today ordinary citizens who would not otherwise dream of having a gun are buying one because they are scared out of their wits. >> william rubiak is a ukrainian immigrant who owns a store outside washington, d.c. he's been robbed at gunpoint four times in the past two years. now william rubiak has bought a gun and he says next time he will use it. >> i will shoot and i will shoot to kill. >> fear is the biggest seller of guns. studies have shown each urban crime wave has touched off a new round of gun-buying. >> we have german lugars,