Update. Put another 150 rounds in my Model 8. Great Rifle. One of the things I am starting to notice is the gas piston system seems to really be doing it's job. Shot Monarch again, which has a tendency to be a little dirty. Not problems. When I took down the gas sytem to clean, there it was, plenty of foul to clean. I have been amazed how easy it is to take down the gas system and clean. Again, if you guys are interested in this weapon, it's a keeper. And,,, the chamber area stays cool and relatively clean as advertised.