The reason that I ask the question was that I thought there might be a paint that someone has found to be more resistant to gun cleaning chemicals than others and therefore would need to be replaced less frequently - if at all.
I use fishing lure paint which is a vinyl. The kind that wood lures and lead sinkers have on them. I put on a coat of white, then red. Is really tough and resistant. Use in a well ventilated area. Takes a while to cure, but once it's on...it's on. Have it on all my front sights for my aging eyes. It's expensive and got them at Cabella's near me.
We'll beat this rented mule awhile longer; part of my rationale for finger nail polish (aside from the embarrassment of having to shop for it )being, if it does get funky, it's easy to remove it all without drama and simply redo it.
Tho' it isn't clear why the area around the safety would require too much cleaning.
I dug around the workshop to find the little bottle of the stuff I keep for such use. Of course it's not "Revlon Midsummer Scarlet Allure" (which I made up). Actually it's Sally Hansen Tough as Nails, 175 Pucker Up. (That's even better.)