That extra movement is your friend.

I played with my H2 and 9mm Tungstien buffer yesterday.

Both worked.

I was using a CMMG Chrome Sillicon CAR spring.  The Steel 9mm Buffer was a bit tight but the spring went fully on and off so that spring might work for you.

The MGI Rate/Recoil Reducing Buffer starts off with being a heavier buffer, which is around the same mass as the 9mm "B" buffer.

That's where the similarities end. The MGI Buffer then incorporates a mechanical system inside the buffer, which actually cancels a large percentage of the recoil that is caused by the moving mass, and the attendant muzzle flip as well.

This is done via the use of the short plunger that is on the back end of the MGI Buffer, and the tungsten sliding weights inside the buffer body. As the buffer moves rearward during its cycle, the plunger contacts the back of the receiver extension(buffer tube) a very short time before the rest of the buffer does. The plunger pushes forward, and propels the tungsten weights forward, hitting the buffer body before the buffer contacts the back of the receiver extension. This combination of forward moving tungsten weights contacting the rearward moving buffer body, causes the cancellation of the recoil that would occur normally when the buffer hits the back of the receiver extension.

The result is a major reduction in felt recoil, and muzzle flip, which translates into better control of the weapon in follow-up shots. The target never leaves the sight picture, even in long full-auto bursts and mag dumps. The effect is noticeable on semi-auto or full auto.

Additionally, the MGI buffer works equally as well with virtually any caliber that is suitable for an AR15 or even an AR10. It is basically a universal buffer for any AR15 caliber, and is very popular with the heavy recoiling 50 Beowulf and 458 Socom calibers.

So, even though the MGI buffer costs alot more than standard ones, it has much more effect on the controllability of the weapon, and doesn't stop at just increasing the mass. It has increased mass, and a system to control that mass in motion, to give the best of both worlds.

It's not cheap, but neither is an ACOG or an Aimpoint, or alot of the other things that are on alot of high-speed AR15's and M16's. This is a time-tested system that will definitely improve the handling of your gun. Military, law enforcement, and competition proven. Highly reliable.

Interesting.

Here's a pic of the MGI RRB(Rate/Recoil Reducing Buffer)




It was originally designed as part of the famous Counterpoise System, by Mack Gwinn(MGI) and Jim Sullivan(co-designer of the AR15).

It has been on the market for over 5 years now, with an exemplary reliability and performance record. Got an excellent review in Small Arms Review a while back, and also got a good writeup in Special Weapons for Law Enforcement recently. Alot of the guys in competition and on the "AR variants" section of the forum use these with great success on various calibers too.

It is available in either Carbine length version, or Rifle length version. Same price.

Yojimbo,
The MGI RRB buffer is highly reliable, and we virtually never have to repair or replace any units that are now in the field. No major breakage of the parts has ever occurred since the introduction, and the worst thing that has ever happened, was in a few early units, the roll-pin was a little too soft(from our supplier), and we had some bent roll-pins that we had to replace. That was about 5 years ago. No failures that I'm aware of since then.



Innocent Bystander,
This new MGI RRB buffer is slightly different than the old Counterpoise buffer, but it is built on exactly the same principles. With the Counterpoise system(which I have owned and used) there was a sliding weight(we called it "the clothes pin" because that's what it looked like) inserted into the bolt carrier as well as having the reciprocating buffer. This "clothes pin" had some breakage problems in heavy-duty application, and we re-designed the buffer to do the job of both items that were previously in the Counterpoise system. This new unit actually performs better than the Counterpoise system did, has fewer moving parts, and is more reliable, and is less expensive.
I have since sold my Counterpoise system, and have replaced it with the new RRB buffer, but I still use the adjustable gas tube and D-Fender that came with my original Counterpoise package. They are still going strong after years of use in my gun.

We, at MGI, are still manufacturing and selling the Adjustable Gastubes, and D-Fenders, as well as the RRB, so any user can still obtain the modern version of the Counterpoise package from us, by just buying all 3 parts and installing them in their gun. I use this package in my AR, and it is a phenomenally good performing system, that I wouldn't trade for anything. It rocks!

Yeah, I know, it's not cheap. But, it's damn good.

I went to that CCFA link, which still shows the Armforte Counterpoise system, but Armforte(Mack Gwinn and Jim Sullivan) are no longer operating.  Now it's just MGI. Maybe CCFA bought out the remaining stock or something, or maybe they just haven't updated their web page.
At any rate, we at MGI are the only ones still producing any of these parts, and we are only selling the RRB, Adj. Gastube, and D-Fender, because we don't make the "clothes pin" system anymore. We did all the manufacturing for the Armforte Counterpoise system, and that is out of production now.

I've owned and used all of the above systems, was involved in the testing, and am intimately aware of the exact performance capabilities of all of them, as I directly compared them years ago in actual testing. I tried several prototype versions before the final ones were released. This current RRB version is awesome, and you cannot beat it with any other buffer around. This truly transforms the controllability of the gun, and paired with the adjustable gas tube and D-Fender, you have total control and reliability in semi-auto or full-auto fire. You won't believe how well it works unless you try it. It's a major performance upgrade.

R4Fan,
The standard spring is used with the MGI RRB buffer, and there are no problems with binding.
The spring is a "reasonable" fit on the buffer body, and butts up against the forward flange, therefore negating any need for "friction fit" of the spring. No problems with spring binding or any other spring related problems reported by users with this buffer. No such problems showed themselves in the testing of the prototypes or production units either.

Innocent bystander,
The Counterpoise system included a drill bit to enlarge the gas port on the Carbine barrels for another reason entirely. It was not for additional gas pressure. It was found during torture testing of carbine barrels, that after 500-1000 rounds fired thru the barrel, that high pressure/high temperature gas erosion caused the port diameter to open up larger than the original standard hole size. Once the hole eroded to a certain diameter, it pretty much stayed at that diameter for the rest of the barrel life. Unfortunately, since the carbine AR15 gas system was designed to use a small hole, once the erosion took place, the cyclic rate increased and also caused more violent cycling of the bolt/carrier assembly.  This was circumvented by the Counterpoise system, by drilling the gas port to the diameter it would eventually erode-out to anyway, and then the gas pressure was set using the adjustable gas tube that was supplied with the Counterpoise sytem. This allowed the gas pressure to remain constant, regardless of how many rounds had been fired thru the barrel, and also allowed "tailoring" of the gas pressure to exactly what was needed to cycle the action without battering.

What we now do with the MGI system, is to just let the gas port erode itself naturally, and take up the adjustments necessary with the MGI Adjustable Gas Tube as they are needed. This eliminates the drilling of the port, but requires some adjustments of the gas tube as the erosion progresses. Once the erosion of the gas port is complete, the adjustment of the gas tube will remain relatively unchanged thru the rest of the barrel life, unless you want to "tailor" for certain loads. If a user desires to drill out the gas port "a la Counterpoise System", we can provide the proper drill bit for that process when you buy our adjustable gas tube. The MGI Adjustable Gas tube is exactly the same as the old Counterpoise adjustable gas tube, and there are no differences at all.

The Counterpoise system used a proprietary stiffer recoil spring instead of the standard carbine recoil spring. We found that this was unnecessary when we re-designed the buffer, and simplified and refined the system to what it is now. The MGI system now uses a standard carbine recoil spring. Fewer moving parts, more reliable, better performance than the previous Counterpoise.

I liked my previous Counterpoise system, and used it for quite awhile. When Mack told me he simplified it and made it better, I was a bit skeptical, because I had come to really like the performance of the Counterpoise, and didn't want to take it out. But, after I tried a couple of the RRB prototypes and then the final version, I eventually sold the Counterpoise last year.

When you combine all the new MGI parts together, like a "new version" of the Counterpoise, with the RRB, adjustable gas tube, and D-Fender, the gun is absolutely like a "new generation" of AR15. It is so far and away better and more controllable and more reliable under fire than the original design, that it seems like a different weapon entirely.

Basically, you reduce recoil speeds, reduce battering, and tailor your gas pressure with the Adjustable Gas Tube. You slow your cyclic rate, reduce recoil impact and muzzle flip, retard bolt unlocking, and improve feeding(eliminates double-feeds) with the RRB.
And, you dramatically improve extraction reliability with the D-Fender.

All of this adds up to much more control, more reliability, extends parts life,  gets more hits on target, wastes less ammo in full auto, with less barrel overheating in full auto(due to lower cyclic rate).
All our parts are "full auto rated", and will work over the long haul in full-auto use.

All of these are internal modifications to the action, and are only intended to improve the workings of the gun. Not "eye candy".

Now, when you add our MGI Quick-Change Barrel upper receiver system to the mix, and our upcoming Modular Lower receiver system, you can change barrels/twists/profiles/calibers in about 30 seconds time, and the Modular Lower receiver has interchangeable mag wells which allows many popular hi-cap magazines to be inserted without need for mag-blocks or Franken mags anymore. This is totally revolutionizing the AR15/M16 platform into a "21st century" weapons system with full modularity configurable in the field by the operator. Any rifle or pistol caliber that can be fit into the AR platform can be quickly brought into action, with just a barrel change,  or barrel, bolt, and magazine change, done in seconds(or a minute or two in worst case) in the field. Rimfires too.

Total modularity, total performance, total reliability, affordably priced.
That's what we do.

We also have some even cooler stuff in testing right now to add much more to this package.