your gun, your choice, some do, some don't....when polished I do not think they look as good as the 'patina' ,more yellow...............polish it and in time it will retarnish if you leave it alone, try a bit of something like ;'RIG;' and just wipe 'er down, not polish it 'per se'..............I do NOT like the look of 'mottled', finger printed, splotchy, thats a horse of a different color......