The chamber of one of my pistols was matte stainless, the barrel bright stainless. I did it by hand- Mothers polish and 0000 steel wool. It takes some work, but I found it kind of enjoyable. I didn't have to worry much about overdoing it- and while I sat and watched TV I would work on it an hour or so. While at it I lightly polished the feed ramp (on 3 pistols) and the stainless barel. I even polished the rest of my pisstols just for appearance- no steel wool, just polish and rubbing. Personal choice here- I felt good knowing i did it all by hand. No offense by any means to using a dremel- if I had one I may have used it myself.