If you are talking the outside what he said and if the cylinders and chambers what the poster above said.Get a can of Renaissance Wax, use an old T-shirt and apply a light coat everywhere, then wipe off. It will keep any oil from your fingers from penetrating into/onto the metal. Once in awhile just wipe it off, will hold a luster for a long time. I use it on my blued revolvers, especially the Python.