Rabbit, if the gun is marked "pistol" you don't need to do anything outside of a normal hand gun purchase. If it is marked "rifle" or not marked at all then it is legally a rifle and you would need to go through an NFA dealer for the transfer. As far as the CLEO you would need to contact the DSP troop in Dover and speak to Sgt Nafoskie (I'm sure I mispelled it) for that appproval. Also, some people believe that if you buy a reciever and the FFL transfers it as a pistol reciever than you legally have a pistol. That is not the case, we have to go by what the manufacturer call it, either rifle or pistol. Feel free to give me a call if you have any question. 743-5566