Can I use paint thinner on an AR?

[OC Speedball]

I accidentally bumped the muzzle of my AR on my doorway, and now there is a bit of white paint on the flash hider.

Can I use paint thinner or nail polish remover to get the white paint mark off? Or will that strip the anodized black as well? My other option is just to buy a new flash hider.

[Wook]

You should be fine. Just use enough to wipe off the paint, then clean it off.

[Rock6.3]

Anodize is a changed state OF the aluminum, it is not a paint.
Thus paint thinner will have no adverse impact on the finish of the aluminum portions of your AR.
However the plastic portions may discolor so apply carefully.

[Vlad 11]

WD40 on a terry rag should take that off

[HappyCamper781]

WOOHOO I did that today, and BOY HOWDY it sure does give a good high!

[ocabj]

I wouldn't buy a brand new flash hider just because you bumped it against a wall and got paint on it. Just spray some MPro7 or some other gun cleaner on it and brush it off.

[Grumpyoldretiredcop]

A brass brush should take that paint transfer right off.