CZ Pistol, Black, with a few small wear marks to metal and a couple of small "oops" chips in the finish. What I want is a black durable "protection from corrosion" not a like-new finish. I'm not going to smooth/level it. I've tried paint and markers, but they are removed by gun and brake cleaners after a short while. Thanks in advance for anyone who has an experienced suggestion. That could include "can't be done", but I hope not.