I don't use mine with a suppressor. No issues with heating or fouling.Thanks. I’ve never used one, I’m guess I should tune it with the suppressor if that’s how I’m running it? I’m actually pretty happy with the recoil and virtually zero gas to the shooter, but the action and mags are absolutely filthy - seriously filthy. I’m hoping that by pushing some gas out of the block, it runs a bit cooler and cleaner. Any issues with heating up or fouling the hand guard?