The world is at your finger tips with Gunbroker and the Internet like Jeffbird wrote. You might pay a bit more than at the local pawn shop, but at least you end up with what you are looking for. I was looking for a pre-lock S&W M337PD discontinued in 1999 and found one out of Georgia on Gunbroker. The sale went perfectly and shipped to a local FFL.
Last edited by Windfall; 09/08/17.