Well…. I had the bright idea to chuck it in my ultrasonic cleaner with a bit of a carb cleaning solution that was in there figured it would clean it up good, oh did it ever…. when she came out she was bare metal so a couple hours later I was black and the gun was shiny! Believe it or not it never rusts or discolours. I figured I right f$&@/; it but no it’s fine that way and it went through about 500 rounds b4 I started having this issue.