Replacing Bolt Gas Rings???

Sonny Gunny · Nov 28, 2013

I have over 400 rounds on mine and after I came from the range and cleaned the BCG, I did the test and it fell on its own weight, the bolt moves easily in and out, do I need to replace the gas rings so soon? Are those proprietary as well or can I use DMPS gas rings?

BlueOvalBandit · Nov 28, 2013

If it runs leave it, no need to replace something if it's working just fine.

I'm not sure the hold the BCG up test applies to 308 AR's since the BCG mass is substantially more than an AR15's. I haven't tried it but I imagine it would fail every time even with good rings.

Sonny Gunny · Nov 28, 2013

Thank you for the response, I am sure you are correct since it is heavier than AR15, the test worked on my first and second cleaning not my third and that is why I was concerned, shoots like a dream no failures and have tried 147 grain PMC to 168 with no issues.

I found this quote from another site:
New AR-10 BCG cam pin stuck

The AR15 gas ring wear test does not apply to the larger AR10 BCG. I went through this when I built my first AR10T. I bought new rings and tried it over and over, wet and dry, then I guy tells me "hey dumbass that test is for AR15's not the AR10 class rifles".
It might hold the BCG up if it's wicked dirty and fouled up nice and crusty but everyone of the AR10's, DPMS LR's and Rock River LAR's that I have played with will not support the BCG when standing on end, with brand new rings or otherwise.

Replacing Bolt Gas Rings???

Sonny Gunny

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BlueOvalBandit

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Sonny Gunny

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