Dr. Henry Artkins he wants items first b4 he sends money park city , Utah

i was on craiglist selling my psp with games and other accesories for 250. he contacted me saying he wanted to buy it and he would pay the 250 plus 100 for shipping and another 20 bucks for the money order. he claims he is a dr in utah and he was buying this for his son for xmas who is in west africa for international studies with his mother who works for the embassy there.he asked for my paypal acct which i didnt have at the time so i told him money order was fine but i need the money order b4 i ship the items. he said he would send the money as soon as he could. a few hours later i get an email from a money order place saying i need to ship the items and call them with the tracking number. so i emailed dr artkins back saying i wont do it until i know its ligit. i called the money order company who told me it was a scam and even called the place he claimed he worked at and guess what no such dr henry artkins. i get an email from him tonight saying if i dont send the items to him he will report me to the FTC and FBI.