In this video screenshot, Lt. Gary Contreras with the Cook County Sheriff’s Department shows the parts of a ghost gun, the frame, barrel and slide, that can be purchased separately and would then be put together by someone during a news conference on Oct. 14, 2021, where Cook County Sheriff Tom Dart announced new legislation to ban ghost guns in Illinois. None of the parts of the ghost gun have serial numbers, making them untraceable by law enforcement. (Shanzeh Ahmad / Chicago Tribune)
