If you have a grip screw, you can take it to a hardware store and get the length you need, I've done it for both DW and Contenders. You have to be careful of getting too long though, as the screw turns into the mainspring and too long can cause lockup. DW/CZ still carries most parts, including grip screws for the DW revolvers, price will be higher though. The important part on the hardware one is to match threads, and try for an allen type, but don't expect to find the same size socket, both of mine are different and I bought an allen wrench to go with the screw.
