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Posted: 5/29/2013 6:33:20 AM EDT
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BTW, the manufacturer is taking care of me and I'm confident the issue will be resolved to my satisfaction.
I put up this thread to satisfy my own curiosity, create some discussion, and maybe learn something; not trash a reputable brand. So no, I won't be revealing who made it. 
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Chewing up gas rings is generally the result of a bad interior finish in the bolt channel of the carrier. Worn reamer, or skipping the finishing pass, or some other manufacturing defect can leave the wall finish in there rough enough to snag, deform and break those delicate little gas rings.
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Thanks for the feedback everyone. I appreciate it. I wondered if it was a defect in the carrier.
Shortly after speaking with them on the phone, I received an email with a case # shortly followed with another email from UPS with an attached shipping label. So other than the box I had laying around and the gas used to drop it off, I have no other shipping expenses. I'm sure they'll make it right. |
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Agreed on the rough finish tearing up the gas rings, or a burr on one of the gas ports.
What kind of barrel/gas system/buffer configuration are you running? Excessive extractor tension is not necessary for most reasonable setups, and excessive tension increases the wear and tear. Steel case ammo also wears extractors especially if they aren't quite as hard as they should be. |
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Quoted:
Agreed on the rough finish tearing up the gas rings, or a burr on one of the gas ports. What kind of barrel/gas system/buffer configuration are you running? Excessive extractor tension is not necessary for most reasonable setups, and excessive tension increases the wear and tear. Steel case ammo also wears extractors especially if they aren't quite as hard as they should be. I'm running a 14.5 mid length gas and a H buffer. i shoot what I can find and afford; including steel cased ammo. I've heard steel can cause extra wear but with the low round count here, I don't see how that could have been much of a factor. |
| That configuration should be on the slow end of cyclic rates unless the gas port is just massive. I'd just use a standard extractor spring and insert, and remove any extra O ring or other tension device. Those are used to alleviate symptoms of excessive cyclic rate which your rifle shouldn't have, in fact the opposite. Trying to fix a problem that doesn't exist can have negative effects. |
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Quoted:
That configuration should be on the slow end of cyclic rates unless the gas port is just massive. I'd just use a standard extractor spring and insert, and remove any extra O ring or other tension device. Those are used to alleviate symptoms of excessive cyclic rate which your rifle shouldn't have, in fact the opposite. Trying to fix a problem that doesn't exist can have negative effects. I agree. It came installed from the factory but I removed it after the first one or two range trips to see if it might be contributing to the wear on the extractor and gas rings. I've only had this gun out 4 or 5 times since I built it and it hasn't seen a class, competition, or hard use yet. Which means I was essentially replacing gas rings after every two or three range trips. 
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