Woops scratched it

[Tex1001]

Get a a spray can of flat black enamel. Spray a small amount in a disposable dish. Use a nylon tipped q-tip swab to apply paint into scratch or nick. As it's drying use a swab dipped in thinner or acetone to feather the edges of the paint. When dry, use a regular cloth to further feather the edges.
Even a bench rest gun will always get scratched.
Disclaimer:
I use this method to repair cosmetic scratches on customer's guns. I don't mind scratches on mine.
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I don't have Alzheimer's- My wife had me tested.