How do I remove the black out of the rollmarks and serial# on stainless steel firearms. You can see it strong in the "17" and the "L"s in the pic below. Normal cleaning doesn't seem to remove it.
It wouldn't be so bad if all the lettering was black. I'd say 90% is clean like the rest of the gun, especially the side. But having a few scattered letters and numbers filled in black, just makes it look dirty, lol.not an issue, because the stainless alloy for guns is not surgical steel quality, one reason magnets stick to it,,,there can be staining, or tarnish? for the lack of proper metallurgical terms.....I'd leave it alone as you may cause more harm to the surrounding area by picking, digging, scraping, whatever.........