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Thread: McFarland Gas Ring vs. Standard

  1. #111
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    I have a BCM bolt that has over 7K rounds on it with McFarland rings. My other bolt from a 12.5" has a few thousand through it.



    Owner/Instructor at Semper Paratus Arms

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  2. #112
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    I have one AR (yeah-a cheap one) that ate gas rings. Install new rings and run a couple mags through it---there would be one ring FUBAR with pieces missing. Put a McFarland on it and zero problems since then.
    After that, I put them in all my AR15's and will have it on my AR308 soon.

  3. #113
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    got my rings today and i was kind of nervous knowing how there have been alot of inconsistencies with their diameter, but the 4 i ordered from Grant all measure .502

  4. #114
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    Quote Originally Posted by sinlessorrow View Post
    got my rings today and i was kind of nervous knowing how there have been alot of inconsistencies with their diameter, but the 4 i ordered from Grant all measure .502
    I only had issues with inconsistent diameter rings from brownells. Grant's rings have always been perfect. I have them on all my bolts; 5 in my house alone. I only buy them from Grant. Stick with him and you will have no issues.

    EDIT: I have given away almost ten rings to friends, also purchased from Grant, and they have all been in spec.

    Sent from my SPH-D710 using Tapatalk 2
    Last edited by BufordTJustice; 05-08-12 at 18:01.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  5. #115
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    Little bit of a resurrection...

    Installed a McFarland ring a couple months ago in a Noveske upper, it measured 0.5025" at the time and it was tight in the carrier. 884 rounds later I swapped out the standard carrier for a LMT Enhanced. Had about as much resistance as a slightly used set of standard rings. 870 rounds after that I pulled the BCG to wipe it down and the bolt fell right out of it. The bolt would drop right into the carrier and wobble around when I shook it. Seems a little odd after 1754 rounds, but the rifle was still running fine. The McFarlands were bought from DSG Arms.

    Anyone else have one wear out this quick?

  6. #116
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    I think mine lasted like 10K, but recently I noticed that mine failed the test, yet the weapon was working 100%.

    Quote Originally Posted by MrSmitty View Post
    Little bit of a resurrection...

    Installed a McFarland ring a couple months ago in a Noveske upper, it measured 0.5025" at the time and it was tight in the carrier. 884 rounds later I swapped out the standard carrier for a LMT Enhanced. Had about as much resistance as a slightly used set of standard rings. 870 rounds after that I pulled the BCG to wipe it down and the bolt fell right out of it. The bolt would drop right into the carrier and wobble around when I shook it. Seems a little odd after 1754 rounds, but the rifle was still running fine. The McFarlands were bought from DSG Arms.

    Anyone else have one wear out this quick?



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  7. #117
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    Quote Originally Posted by Iraqgunz View Post
    I think mine lasted like 10K, but recently I noticed that mine failed the test, yet the weapon was working 100%.
    I have one that is up to 5,000 rounds and I must say it is a super durable ring.
    Quote Originally Posted by C4IGrant View Post
    Colt builds War Horses, not show ponies.
    Quote Originally Posted by Iraqgunz View Post
    This is 2012. The world is going to end this December and people are still trying to debate the merits of piece of shit, cost cutting crap AR's. Really?

  8. #118
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    I tried one of these in my rifle a while back. A DD upper, barrel, and BCG. The McFarland ring made it noticeably harder to slide the bolt into the carrier. I lubed the bolt with Frog Lube and took it to the range. I had multiple failures with the McFarland ring. I removed it and re-installed the original gas rings and the malfunctions stopped. I don't question that others have had good experience with them, but it didn't work out so well for me. If they have inconsistent dimensions from one ring to the next then I might have better luck with a different one, but I don't think I'll mess with it any more.
    Steve

  9. #119
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    Quote Originally Posted by SteveL View Post
    I tried one of these in my rifle a while back. A DD upper, barrel, and BCG. The McFarland ring made it noticeably harder to slide the bolt into the carrier. I lubed the bolt with Frog Lube and took it to the range. I had multiple failures with the McFarland ring. I removed it and re-installed the original gas rings and the malfunctions stopped. I don't question that others have had good experience with them, but it didn't work out so well for me. If they have inconsistent dimensions from one ring to the next then I might have better luck with a different one, but I don't think I'll mess with it any more.
    I have 5 from Grant and every one is the same size.
    Quote Originally Posted by C4IGrant View Post
    Colt builds War Horses, not show ponies.
    Quote Originally Posted by Iraqgunz View Post
    This is 2012. The world is going to end this December and people are still trying to debate the merits of piece of shit, cost cutting crap AR's. Really?

  10. #120
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    Quote Originally Posted by sinlessorrow View Post
    I have 5 from Grant and every one is the same size.
    I only have the one (IIRC it came from Grant as well). I just saw someone mention above that their size can be inconsistent but I have no way to know for sure without getting some more to compare to.
    Last edited by SteveL; 11-20-12 at 00:41.
    Steve

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