[lugerholsterrepair]

Sam, Yes you can use triple aught steel wool with a liberal amount of oil and it will not take off bluing. It will probably take off the brown patina however since that is genuine rust. I do not believe you will find much blue under the brown patina. It will most likely be white metal.Blue is a form of rust but once it turns to brown it is a different type and triple aught steel wool will take it off. Very fine steel wool and oil will not harm blue if not rubbed long and hard. You might try it in an area under the grip panels if the brown patina can be found there and see what happnes. Jerry Burney