Lots of really good stuff here.
Bret, let me try and find a video taken from in front of the firearm. You can see how violently the brass is being chucked forward. It's nothing like an AK in regard to ejecting brass to the moon but it does chuck it out of there. The problem lies in the outliers when it bounces around the ejection port and then dribbles out or goes where ever it wants to go...sometimes back into the ejection port.
Bret, I agree with you from the simple standpoint of production. It makes zero sense to produce a billion different parts unless you absolutely have to which in the case of the bren, going between calibers, you may have to beyond simply drilling different port sizes. This is way beyond my intelligence level. ![Smile](http://www.m4carbine.net/images/smilies/smile.png)
I can get some measurements tomorrow when I'm off duty if I have the time. I'm not really sure that the gas port would really erode in five thousand rounds. My firing schedule was not that crazy and the gun really didn't get all that hot despite being run pretty hard. My definition of hard is that i'm not a bench shooter and 99.9% of my shooting beyond zeroing, is running drills that involve multiple rounds per evolution. The problems 'sort' of got progressively worse as the round count increased but that's not really fair to say that its a gas port issue. There ARE some other factors, ie dirt, grit, changing levels of lubricant within the firearm, broken magazines that were later chucked, new magazines and tight springs etc.
I would really be curious to run the 14 inch gas piston gubbins in my 9 inch gun.
Can someone pull their 7.62X39 bolt and check tension on their extractor for me? Mine BARELY moves when probed with a glock tool. Its "clean" and free of debris but it feels like there's a 5000000000 lb rated spring under there....
You are a genuine toolbag if you have your EDC "loadout" in your signature line...
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