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1/25/2018 7:38:29 AM
Posted: 12/14/2005 3:48:07 PM EST
Hey guys, I'm hoping yall can help me out. I have a post ban m4gery upper that is getting way too much gas. If I try to run with the standard CAR or "H" buffer, I get ftextract. The extractor will jump right over the rim (yes I've tried the 0-rings, wolff springs, and other extractor aids). I'm currently running a solid 9mm buffer, and it has cured my jams, for now. What is the best long term solution to this problem. The barrel is still very accurate, so I hope I don't have to replace it. I've seen services where the gas port is plugged and re-bored. Is this a good idea? If not, what are my options? Has anyone else had this problem, and found a cure?
Link Posted: 12/14/2005 5:09:03 PM EST
I have seen gas tubes that had a screw in them where you could regulate the amount of gas going back. No idea if they acutally work or not.
Link Posted: 12/14/2005 5:31:38 PM EST
[Last Edit: 12/14/2005 5:32:46 PM EST by ColtRifle]
Put a new barrel on it. They aren't expensive and you can get rid of that ugly post ban barrel. Check out CMMG's barrels. I paid $25 to a local gunsmith to replace it for me.

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