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Thread: Gas Rings...

  1. #11
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    Quote Originally Posted by rob_s View Post
    If you keep your guns dirty, they rarely fail the stand-on-end test.
    Wise Guy!

  2. #12
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    Quote Originally Posted by gotm4 View Post
    Using a knife blade (a dull one) or a very small screwdriver start one edge of the rearmost ring off of the bolt and slide it around until it's off. Then the next and and the one after that. Install new ones exactly the opposite one, then the other ect. I replace rings when I can stand the BCG on end (bolt against the table) and the carrier will collapse under it's own weight.
    What is BCG?

  3. #13
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    Quote Originally Posted by monkeywrench View Post
    What is BCG?
    bolt carrier group

  4. #14
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    Ya know... gas rings are something I never really got to wrapped around the axle over.... I've always found the OEM rings to work fine and if I think I'm having a problem.... I change them.. I got 12K out of a set of rings with no problems... hell.. the Bolt failed before the rings did.. so I got a new bolt with new rings on it........

  5. #15
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    Quote Originally Posted by Harv View Post
    Ya know... gas rings are something I never really got to wrapped around the axle over.... I've always found the OEM rings to work fine and if I think I'm having a problem.... I change them.. I got 12K out of a set of rings with no problems... hell.. the Bolt failed before the rings did.. so I got a new bolt with new rings on it........
    Considering that an AR will cycle with just one gas ring (Don't believe me? Ever notice your rings all aligned??)... I agree there's nothing wrong with OEM's. We were blessed with the genius design of the AR-15. Most of the after market goodies for it are just that, goodies, and offer little significant value except to the guy supporting a family selling those goodies.

  6. #16
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    So Harv is saying that his bolt failed prematurely so that is reason enough not to try a McFarland gas ring??,,,,,,,,,,,

  7. #17
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    Quote Originally Posted by onmilo View Post
    So Harv is saying that his bolt failed prematurely so that is reason enough not to try a McFarland gas ring??,,,,,,,,,,,
    That's not how I read Harv's reply. But I'm not sure what he defined "Bolt Failed" as. Cracking, broken lug, worn lugs, etc.?

    Crane released the 2006 Small Arms Symposium .pdf file, and one of the areas of discussion was Bolt Failure.

    It basically said that a weapon undergoing "Harsh Fire Schedules" would see Bolt Failure between 3,000 and 6,000 rounds. A weapon undergoing a "Milder" fire schedule should see a Bolt Fail between 6,000 and 10,000 rounds. These would all be on carbine length gas systems that are much harder on the weapon than a mid length gas system.

    My point...I don't think a Bolt Failure at 12,000 rounds could be classified as "Premature".

    There is no way that I can see that a MacFarland ring could cause a Bolt Failure of any kind.

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