AR Sponsor
Posted: 7/4/2013 6:06:31 AM EDT
|
I was reading Defense Review's article on The Big M4 Myth and it got me thinking. I have a 14.7" upper that i recently bought from PSA with a carbine gas system.
I am curious what buffer would be ideal for this upper. My other rifles have standard carbine buffers in them, but I am considering trying out a H2 buffer. Would I see any difference in performance with the H2, or should I just stick with the carbine buffer? I realize this is probably a dumb question, but I've never really messed around with different buffer weights, I usually just shoot the rifle with whatever buffer it comes with. Thanks |
|
Quoted:
I was reading Defense Review's article on The Big M4 Myth and it got me thinking. I have a 14.7" upper that i recently bought from PSA with a carbine gas system. I am curious what buffer would be ideal for this upper. My other rifles have standard carbine buffers in them, but I am considering trying out a H2 buffer. Would I see any difference in performance with the H2, or should I just stick with the carbine buffer? I realize this is probably a dumb question, but I've never really messed around with different buffer weights, I usually just shoot the rifle with whatever buffer it comes with. Thanks Every AR is unique. Yours might run with an H2....might not. The rifle's configuration and your ammo of choice will determine the best buffer weight. |
|
Quoted:
Quoted:
I was reading Defense Review's article on The Big M4 Myth and it got me thinking. I have a 14.7" upper that i recently bought from PSA with a carbine gas system. I am curious what buffer would be ideal for this upper. My other rifles have standard carbine buffers in them, but I am considering trying out a H2 buffer. Would I see any difference in performance with the H2, or should I just stick with the carbine buffer? I realize this is probably a dumb question, but I've never really messed around with different buffer weights, I usually just shoot the rifle with whatever buffer it comes with. Thanks Every AR is unique. Yours might run with an H2....might not. The rifle's configuration and your ammo of choice will determine the best buffer weight. That makes sense. In case it matters: on the range I usually shoot 55gr PMC bronze or Federal xm193. And when I have it beside my bed for HD I will use 62gr Federal Fusion or 75gr TAP. I feel like this might be something I will need to figure out myself by testing different buffer weights. ETA: and that was my 1000th post |
| I just tried different ones 'till I found one I liked. I tried JP silent buffer, H1, H2 and finally liked the H3 buffer the best. People kept telling me that it was too heavy for light loads but it shoots everything and with the lightest recoil. They are cheap and good to have extra anyway. |
|
Quoted:
You want the heaviest buffer that wil reliably cycle your weakest ammo. Buy a bunch of different weights and sell the ones that don't make the cut. Good advice here. I have a BCM 14.5 upper with an H2 buffer. The lowest power ammo I shoot is PMC Bronze and it runs great. Eventually I'll try an H3 buffer, but I suspect it will be too heavy. We'll see. |
|
Quoted:
Quoted:
You want the heaviest buffer that wil reliably cycle your weakest ammo. Buy a bunch of different weights and sell the ones that don't make the cut. Good advice here. I have a BCM 14.5 upper with an H2 buffer. The lowest power ammo I shoot is PMC Bronze and it runs great. Eventually I'll try an H3 buffer, but I suspect it will be too heavy. We'll see. Is there any difference in recoil or muzzle climb with the H2? I don't think AR's have much recoil, but I've read a heavier buffer smooths it out. |
|
You read the article, right? Actuallly read the article, vs. just browsing over it? With the author's background, and the round count he came to running weapon dry; then how he kept the weapon firing when it started short-stroking by dropping the buffer weight, and a few drops of oil convinces me.
Although, I'm running the actual equivalent specs to a USGI M4 in my AR Variant; 14.5" carbine gas/ .0625 gas port; as others have commented your dwell time and gas port location and size changes what you need to run. Lastly, his explanation on why he used better springs, and the buffer weight he chose is explained too. As for heavier buffers for semi-auto; a standard carbine buffer would be fine if shooting single shots at the range, but if doing burst with rapid trigger pulls, I see merit for a heavier buffer. |
|
Quoted:
Quoted:
Quoted:
You want the heaviest buffer that wil reliably cycle your weakest ammo. Buy a bunch of different weights and sell the ones that don't make the cut. Good advice here. I have a BCM 14.5 upper with an H2 buffer. The lowest power ammo I shoot is PMC Bronze and it runs great. Eventually I'll try an H3 buffer, but I suspect it will be too heavy. We'll see. Is there any difference in recoil or muzzle climb with the H2? I don't think AR's have much recoil, but I've read a heavier buffer smooths it out. Surprisingly, the H2 didn't have as much affect on muzzle climb as I thought, although it was reduced. Now going from standard to an H buffer in a 16" middy almost eliminated muzzle climb. |
|
I put a Adams Arms piston system on my rifle when I built it. I asked Adams Arms about buffer selection with a piston gun. They recommend, and always use, carbine buffers. Thats what I bought, and now ..... I can't imagine going with anything heavier.
Just my 2 cents Good luck. |
|
I'm no physicist but I don't think a buffer is going to do anything for muzzle climb as it relates to gases pushing the muzzle upward as it leaves the barrel and muzzle device.
I think what you are experiencing is more control because the BCG experiences more resistance from a heavier buffer as it moves into the buffer tube. |
| Great article on my DI upper I use a Colt SOCOM barrel,wolf x power recoil spring and 9mm buffer along with an xpower extractor spring and an LMT enhanced carrier to slow dwell plus the xpower recoil and 9mm buffer contribute to that it brings a carbine close to operating stresses like a full size 20" rifle. |
AR Sponsor