I noticed may posts that referenced Flitz as a polish to remove rust, scratches, etc. I ordered a tube and tried it on an old Model 24 Winchester double barrel that had a bit of rust and years of grime. I was amazed how easily and how well the gun cleaned up. It removed traces of rust but did not seem to harm the original bluing. So I tried it on an even older Model 1892 Winchester rifle and was equally impressed with the results. A great product for cleaning guns that have rust, scratches, etc.