Jerry Kiln
As for polishing, folk have managed to do them,
Sunday, September 13, 2026, 15:42

and muddied the collector waters enough by doing so that minus the box with end label showing the SN and GKNR-5 or -6 catalog number, the default assumption is that it is not a factory job, especially if outside the known SN range and years of production. There even have been examples of from Ruger factory workers polishing their own guns outside of special run SN blocks/years, but documenting that has been nearly impossible, even though the worker owned it and said he did it himself, it all undocumented past a much later statement by the worker, zero from factory backing up the story.

Mine has the highest known SN yet recorded, the Ruger SN table shows it outside known years of production BUT their look-up tool where you enter the SN shows it shipped a year earlier inside the known range and lists it by its proper catalog number. All to show their tables are not exact, especially for special limited runs.