I was going to mention this too. There are special bluing salts that will blue/blacken stainless steel. Dave Sams is one gunsmith doing it. I talked with my local gunsmith that also said it was possible, but he not set up with the salts to do it. If you do a search for "The RazorBlack 10mm" on Pistolsmith, you find a very good example (w/pics) of what is possible regarding blackening/bluing stainless.10mm said:Some stainless can be "blued." It takes different salts at a different temperature but it can be done. I think Dave Sams does stainless bluing but I am not positive.