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mcFarland One Piece Gas Rings...

This is a discussion on mcFarland One Piece Gas Rings... within the M16 AR15 forums, part of the Rifle Forum category; I was wondering if anyone has tried the one piece McFarland gas ring that replaces the 3 split steel rings/washers on the bolt? What is ...


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Old April 9th, 2009, 08:14 PM   #1
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Thumbs up mcFarland One Piece Gas Rings...

I was wondering if anyone has tried the one piece McFarland gas ring that replaces the 3 split steel rings/washers on the bolt?
What is your opinin of it please?

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Old April 9th, 2009, 09:42 PM   #2
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I use it in all my AR's and I like it. It may be an ingenius solution to a non-existant problem, but it works well, is a product improvement and is cheap.

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Old April 10th, 2009, 09:12 AM   #3
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Quote:
Originally Posted by fellers View Post
I was wondering if anyone has tried the one piece McFarland gas ring that replaces the 3 split steel rings/washers on the bolt?
What is your opinin of it please?
+1 for big dee. Having the splits in the split rings line up can't be a good thing and the McFarland ring solves that without any downside.

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Old April 10th, 2009, 03:56 PM   #4
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im guessing, but no way to prove it. you might have more wear in bolt carrier because one piece rings would not be able to flex as much going back and forth in the in the carrier??

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Old April 10th, 2009, 08:40 PM   #5
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well soon as mine get here I can try it out...

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Old April 17th, 2009, 08:34 AM   #6
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Thumbs up The 4-Coil Gas Ring Is G-T-G!

This gas ring is included in the SOCOM Reliability Parts Kit for US Special Ops units and will "last the life of the bolt even at maximum rates of automatic firing and the improved seal will make the rifle more reliable in the cold", according to the engineers at the US Navy Surface Warfare Center (Crane, IN) who developed the kit.

I've replaced the factory gas rings as they wore out with the Mcfarland ring on every AR that I've owned for years. I've never had to replace any of the Mcfarland rings - ever!

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Old April 17th, 2009, 04:40 PM   #7
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Cool. I have a couple here in a ziploc baggie that I never got around to installing.

The only thing I have ever broken on an AR was a gas ring... (M16A2 during Desert Shield. )

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Old April 22nd, 2009, 12:37 PM   #8
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Quote:
Originally Posted by pjomalley View Post
im guessing, but no way to prove it. you might have more wear in bolt carrier because one piece rings would not be able to flex as much going back and forth in the in the carrier??
The McFarland ring is one piece, but it is made of a long spring coiled up. The coils flex as much as single rings and that's part of the reason they work so well. Here's a photo to show what I mean.

http://www.midwayusa.com/eproductpag...eitemid=163933

They do last as long as three G.I. gas rings, if not longer and that is even true in the really short barreled full auto guns. We tell students to use either as their preference, but the McFarland rings are easier to put on without buggering them up.

BTW, one of the last things we do at an Armalite Police Armorers course is to have Mike Gingher or I (depending on which one of us is there at the time) take four or five rifles and deliberately use bad parts to show what malfunctions are from what bad parts. I can't tell you how many times I've used ONE G.I. gas ring that was serviceable (and left the other two out) and the rifle STILL worked fine for semi auto firing. That's not to say I recommend that, but it does show the gas rings are a lot stronger and better designed than they need to be.

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Old May 24th, 2009, 04:39 AM   #9
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I used to use them but when the wife and I went to Shootrite Firearms Academy after her first trip to Balad, I had trouble manually cycling the charging handle when the weapon started to get dirty. I swapped the McFarland ring back out for the original bolt rings and didn't have any more problems. After that, I went back and put the original bolt rings back in all my ARs. I guess I found that while it's a solution to a non-existant problem, it did create a new problem so I quit using them.

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Old May 24th, 2009, 04:56 AM   #10
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I don't know. but my gun has been cycling better with them and i have never had any problem whatsoever so far. I have around 400 rounds through it. brand new gun. The tolerancne was a bit tighter fit in the bolt carrier than the 3 split rings, but all in all it works great for me. I keep my firearms very clean and maintained!!!
I ruined my 3 rings getting the off so I hope I get no troubles :)

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Old May 25th, 2009, 06:58 PM   #11
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I like them

I installed one om my AR and I love it.

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