An eight-year wait is finally over for the family of Costas Christofi, the 55-year-old driver who was shot and killed by former Nets star Jayson Williams in 2002. Williams was sentenced to five years behind bars yesterday, giving the family a form of closure. While showing off his gun to some people in his New Jersey home, Williams didn’t check the safety on the shotgun and when he snapped it shut, it fired and struck Christofi. While Williams was acquitted of aggravated manslaughter in 2004, he was convicted on four counts of covering up the shooting. The jury was deadlocked on a reckless manslaughter charge. To avoid a long-awaited retrial, Williams pleaded guilty last month to aggravated assault. “There’s not a day I wake up that I don’t feel sorry for what I did to Mr. Christofi and that I put you through this,” Williams told Christofi’s family on Tuesday. He could potentially be released in 2011.