If a blued gun has stubborn surface oil stains, Flitz can be used VERY gently and sparingly.
I have removed stains with Flitz by taking a kitchen towel, a small dab of Flitz smeared into the towel and then basically a wipe on and wipe off.
Certainly not something I would do more or would need to do more than once if the finish is looked after and wiped down with Ballistol and Renaissance wax every 4-6 months.
It is very gentle on blue, but I wouldn’t do it unless it’s absolutely necessary to get rid of those surface stains.
I wouldn’t even call it polishing. I wouldn’t rub more than three or four circles in one area of the bluing.
You’ll see how much of the blue is coming off on the kitchen towel and it will stop you from overdoing it.
I took a little risk and doing it and it work well, but I was very cautious and gentle with it.
This said, I would never under any circumstances use mothers mag on blued gun unless it was a real heavily rusted beater that either needs a professional refinish, or a quick fix cold blue.
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