Interesting on gas port erosion as I've shot a few rifle length tubes to over 12K rounds each, and could tell no difference related to gas volume than when the barrel had 1000 or so rounds on it. Probably helps the ports were the correct size to start with...

We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....