I used big45 rust remover and birchwood cold blue. We'll see how it holds up to the heat.
Corrosion
Recently I've been bushwacking in rainy coastal areas, and exposed one of my rifles to salt water and a couple weeks of rain. I noticed a bit of rust creeping out of the gas selector so I pulled the barrel, removed the corrosion and blued the dial and selector. I also had some light corrosion on a couple of the stock fasteners so I pulled them and blued the screw heads. It's impossible to keep oil on the selector so I'm not surprised it was effected.
