I'm trying to repair my maglite, I could use some help.

For a long time it has simply failed to work, and after finally figuring out how to take the switch out I found the 3 metal contact parts inside the switch were corroded. I attempted to clean them and the corrosion on one part was bad enough that it broke. Here is a picture.



As you can see the part on the right has a small missing piece as compared to the part on the left. My question is, can I buy this part anywhere, or could I possibly make my own replacement part? I'm not sure what type of metal these are made out of though.