Has anyone used the mcfarland one-piece gas ring?  Pros or Cons?  thanks in advance!

I used the Olympic made version. It was cheaper and supposedly stronger according to Olympic.The only difference I noticed was a tighter bolt to carrier fit.

so is there any reason for me not to buy one?  the price is right ($2).

One of the best things I've ever purchased. I bought several on the advice of SMGLee and the installation of them and a Wolff extra power extractor spring and d ring was a literal miracle cure for three seriously malfunctioning M4's in my area.

I bought mine from Armalite, I don't think they were even $2.

Sounds like the combo I'll use with the RRA enhanced bolt and carrier.  thanks!

this may be a stupid question, but will I need one or three?

You only need one.

I have them on all my AR's, and I haven't burned thru any of them yet like the standard rings.

ONE

Funny you should ask,.A buddy of mine bought 3 thinking he needed them so I got 1 for free...

i got mine a few weeks ago and i think it works great.

I have a Colt Match Target with a Les Baer carrier and match bolt that was running perfectly. I then decided to install the "McFarland upgrade" and from that moment onwards, I had my fair share of jams, short strokes and double feeds.
I then removed the McFarland one-piece gas ring, and low and behold, all the trouble disappeared. Maybe my carrier was a bit on the tight side, so I was attempting to fix a problem that was "non existent".
In other words, if it ain't broke, don't fix it!

I bought several mcfarland rings when they first started advertising them on the old board several years ago, have never had any problems with them, except for, when I tried them on a Baer bolt a few years ago. All it took was about 20 to 30 rounds to start short stroking in my daughters' Bushmaster shorty.

I had called & talked to Les a couple of times before he fessed up to admitting plenty other folks were having the same problems, mainly F/A guys out west somewhere.
I couldn't get a straight answer about where the tolerance problems were, so I left it at that. I keep all of my GI bolts wrapped in slinkys & the Les Bears' in their 3 ring suits.

No problems since, I can't wait to see how well they work in the SEBR rifles, if they show up [red]THIS YEAR[/red]!!

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