Quote Originally Posted by MASP7 View Post
Grant-
Unless they're making those uppers and lowers out of steel, they aren't being “coated” in black oxide. (Black oxide is a conversion process, not a coating.)

You might want to check the details with ADS, but if Robar is doing it, it’s probably one of the spray-on polymer finishes.

Could be. That is just what they called it and said who was doing it for them. I will see if I can get some clarification from them.


C4