I have a Sig Sauer P226 Elite which has the Nitron finish. I replaced the stock grips/grip screws with Sig Sauer factory Blackwood grips and nickel hex head screws and I'm very pleased with the appearance. I have a nickel hammer, slide release, and decocker ordered. I plan on eventually swapping to a nickel trigger and magazine release as well. One option I've been considering is polishing the outer flats of the slide to look like the Equinox or X5 Black & White model. Since the slide underneath the Nitron finish is stainless steel I don't see why this would be an issue. So, my questions since this is a permanent alteration are 1. Should I polish the flats? & 2. What is the best way to go about doing so? I was thinking of using painters tape to block off the areas which I don't wish to polish; however, I am unsure of what to do around the area's containing slide serrations and how to achieve the shiny peaks with Nitron coated valleys.