FAIRLESS HILLS, Pa. (AP) — Authorities outside Philadelphia have identified an armed man who barricaded himself inside the bathroom of a sporting goods store and killed himself.Bucks County Coroner Joseph Campbell said Sunday that 58-year-old Mark McCarty of Levittown died of a self-inflicted gunshot wound to the chest.Authorities say he entered Dick's Sporting Goods in Fairless Hills after 7 p.m. Saturday and asked to see a shotgun and ammunition. McCarty pulled out a handgun — later found to be unloaded — and ordered the worker to undo the shotgun's gun lock. He then barricaded himself inside a bathroom.The store and nearby businesses were evacuated during the four-hour-long standoff. No one else was hurt.Lt. Henry Ward says McCarty had also been involved in a standoff with Middletown officers in 2002.