SPRING GARDEN (WPVI) -- Police say a 21-year-old man accidentally shot and killed himself at a gun range in Philadelphia's Spring Garden section.It happened at 7:14 p.m. Tuesday at The Gun Range, located on the 500 block of North Percy Street.Police say the man was cleaning his gun when he accidentally shot himself once in the chest.He was rushed to Hahnemann University Hospital where he was pronounced dead at 7:38 p.m.The victim's identity has not been released at this time.