Ricardo Perez, 35, of Beach Park, (inset) is accused of threatening to kill his girlfriend and her family before running from Lake County sheriff’s deputies and throwing a loaded handgun into a yard near Beach Road and Loyola Avenue in Beach Park on February 16. | Background Photo: Nick Rusin; Inset: LCSO A convicted felon admitted to dealing guns since leaving prison after he threatened to shoot his girlfriend while a 9-year-old was in her home…