Quoted from Bribo13:Steve young has schematics for most gun games.
Steve also has a few target pieces for some gun games. I have a Williams Bonanza and he had one of my targets. For the other I took a picture of it and removed all the color from it using a photo editor and printed it out. I then used florescent markers to color it in and I glued it to some cardboard. It turned out looking really good. But check with Steve for any parts needed and he may have them. But you might have to get creative in making some of what you need. I had to manufacture a few parts on my own using creative ways.