Nitride touch up/Coating

[JRHorne]

All,
Working on an upper and had to remove some of an adjustable gas block to get clearance for the rail. What would you all recommend to touch up the gas block? It is a nitride finish, and there was a bit of material taken off. I've seen the Birchwood Casey pens and I don't think that will do it. I can put pics up if it helps.

 

[Catfish]

If it's under the rail? Nothing

 

[Ikarus1]

Sharpie black

 

[91lowrydr]

You could try some black appliance touch up paint to see how close it matches...

 

[RR]

Gas block? High temp grill spray paint.

 

[Jerzsubbie]

Tape it off and use high temp spray paint. I’ve done it before and it works great.