My dad retires from the Sheriff's Dept. this November, and I'm thinking of getting everybody to pitch in, maybe build him a custom 1911. I've been looking at caspian frames and slides. He isn't a fan of shiny things, so I will probably want to get a non-reflective finish put on if we do this. Does anyone have suggestions for finishes, and how will this affect the fit of the gun? Can a finish be applied to a SS surface or do I have to get Carbon Steel? Are 1911 guts interchangeable, or will I have to get all-caspian or go to a gunsmith? I'm kinda jumping in head first here, so any help is appreciated.