Trigger sear polishing

[mattyw1987]

These really do work well but on trigger sears I never use them as I like to try and keep the shape as close to original as possible and wet dry followed by autosol on a flat surface is more precise.

[TenMetrePeter]

Those in 60+ age group will remember ink rubbers. Used to wreck your paper but great for shining up steel similar to what you describe.

[craig9mm]

might be useful for air rifle cylinders,my old gunsmith used polishing stones for trigger sears on S&W and Colts