Home CMMG AR-15 – How To Replace Gas Rings

AR-15 – How To Replace Gas Rings

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Everyone asks where I find AR-15 stuff in stock or where I order from, so here you are:

A quick and easy maintenance step for your AR-15. I show how to replace the gas rings on your bolt.
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42 COMMENTS

  1. Just damaged mine somehow while cleaning it. They were sticking out and hanging up on reassembly and a little too much force and bent the end of one. Less than 1000 rounds but I'll be replacing them now. And thanks to your video I know how. Earned a sub. Nice to the point video

  2. I can confirm that the gas ring placement DOES matter. Brand-new BGC and all 3 gas rings came non-staggered…causing my rifle to short stroke and never chamber the 2nd round and even partially eject the casing. Just my 2 copper 😀

  3. My SOLGW BCG fails the test after only 5-600rnds. I rapid fire a lot & its a short barrel .300, but still very disappointed. This is supposed to be a cream of the crop BCG.

  4. Is there anywhere I can buy a set of gas rings without outrageous shipping.
    Everywhere I go they're either trying to rip me off at 5 or 8$ for 3 rings or only sell a bag of 24+ rings.
    I found a set for $2.50 yet with shipping it came to $10.
    I cant justify spending $10 on an item that isnt worth more than a roll of tin foil wrap

  5. My BCG falls onto the bolt but i've only had >3000 rounds through it.
    However, the bolt wont fall down on its own weight. It only collapses from the bcg weight.

    I was reading gas rings should last more than 6000-8000 rounds. Seems off.

  6. Thanks! My gun started to fail the extraction of spent rounds and I found one of my rings had actually broken. Never seen it before but this seems dead simple to do. My parts arrive in a week. Thanks again.

  7. Would worn rings cause short stroking? Live round has a gash from the bolt about 1/2" above the rim and failed to feed. Remove bolt and ring gaps are lined up. Alternate ring gaps and rifle fires 3-4 rounds. Then gaps line up again

  8. That ring test isn't the most accurate or comprehensive.  It's attempting to test the coefficient of friction based on ring tension but that's not right as the surface finish of the inside of the bolt carrier has a LOT to do with that.  Some are machined a little nicer than others.  I can guarantee you you could install some gas rings with 10,000 rounds on them and they'd be lapped smoother than the surface of a diamond and it would still pass this test on my newer Colt bolt, as the inside is machined horribly, thus making it APPEAR as if it was good when in fact it would not be… If you're going to rely on this test, take a good magnifying glass and inspect the inside of your bolt carrier as well to determine how smooth or jacked up your surface finish is.

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