It has been years but I bought some bake on paint from Brownells, the gunsmith suppliers. No idea if or which sponsors might offer similar paint. It was far tougher and more heat resistant than expected. It even held up on the compensator of a pistol shooting hot loads. I don't know what colors it is available in now but if I just wanted to run a painted bar for protection I think I would give it a shot. Of course discretion being the better part of valor you probably want to sneak it in the oven when the boss isn't home. A barbecue pit with thermometer would work too. Best I remember bake time was just twenty minutes or so and the temperature wasn't that hot, maybe two-something? Seems like I remember them coming out with a Teflon version too, might be nice on bars.
Hu