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Posted: 7/15/2010 7:25:54 PM EDT
| I just recently bought two new Bushmaster uppers (complete.) One is a 14.5, the other is a 16" model. They both came with standard carbine buffers in them. I read a couple of posts that said to test several different weight buffers and go with the one that works best. If I just didn't want to spend a lot of extra $, which would I buy for each upper that would be pretty much GTG for each barrel length? I guess I am asking for a sampling of what you folks use (from standard weight buffers to heavy and 2H) in your M-4s with 16 and 14.5" barrels. I was thinking about just buying a couple of H buffers for them, and leave it at that. |
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Quoted:
I just recently bought two new Bushmaster uppers (complete.) One is a 14.5, the other is a 16" model. They both came with standard carbine buffers in them. I read a couple of posts that said to test several different weight buffers and go with the one that works best. If I just didn't want to spend a lot of extra $, which would I buy for each upper that would be pretty much GTG for each barrel length? I guess I am asking for a sampling of what you folks use (from standard weight buffers to heavy and 2H) in your M-4s with 16 and 14.5" barrels. I was thinking about just buying a couple of H buffers for them, and leave it at that. I'm confused.... 
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My experience with BM carbines says they are slightly overgassed. In mine I played with buffers of various weights and found mine function with everything that I tried. I finally threw a Spikes heavy buffer in my Patrolman carbine and left it there, seems to lighten recoil just a bit. I believe the 9MM buffer would work just fine also. YMMV. What works for me may not work for you, that would need to be your experiment/experience. 
or you could stick with your carbine buffer that BM tends to think is just fine. 
When I started experimenting, I found some tungsten weights and tungsten powder (called ear weight on ebay) and used old buffers. I weighted the buffers to the exact weights I wanted and started swapping them as I shot my rifles. I never experienced problems. Then when I bought my first Spikes upper, it came with their buffer (I believe is a ST-T2) and tried it in a few rifles, I liked it so I bought a few and that is my standard buffer in my carbines. For the cost of tungsten powder and a little time, you could find what works in your rifles. I ended up taking a few of my friends buffers &pulling out a couple steel weights. Then I measured the tungsten powder, poured it in the buffer tube and sealed it with super-glue. After curing, I slipped the last weight in and the rubber spacer into place, popped the buffer cap into the buffer and pinned it. Then basically we have an H3 (or H2) depending on what weight we want. It's your time, your rifles, and you are the only one that really knows what you want. Many of us try many things in customizing our rifles, when shooting paper we can afford to get some things wrong. It's not like you will harm yourself or your rifle, it will most likely just change where your brass hits the ground as it ejects. |
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Quoted:
Quoted:
I just recently bought two new Bushmaster uppers (complete.) One is a 14.5, the other is a 16" model. They both came with standard carbine buffers in them. I read a couple of posts that said to test several different weight buffers and go with the one that works best. If I just didn't want to spend a lot of extra $, which would I buy for each upper that would be pretty much GTG for each barrel length? I guess I am asking for a sampling of what you folks use (from standard weight buffers to heavy and 2H) in your M-4s with 16 and 14.5" barrels. I was thinking about just buying a couple of H buffers for them, and leave it at that. I'm confused....
Damn, after I read this again, I'm confused too! What I meant to say was that the two lowers I mated the uppers to had standard weight carbine buffers in them. Thanks for the info, folks. From what you all are telling me, I think I'm just gonna get a couple of heavy buffers and stick with that. Richochet, is the Spike's buffer you are talking about similar in weight to a standard heavy buffer, or an H2? I looked at it on the Spike's website, but I wasn't sure what weight in a standard buffer it was closest to. |
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Both my Colt and LMT 16" with carbine gas system runs fine with H buffers, I'm also using M16 auto BCG on both of them also both with BCM extractor upgrade kits.
I was having some occasional failure to feed with my LMT using the factory standard carbine buffer and semi auto BCG, but when I replaced the buffer to a LMT H buffer and LMT M16 auto BCG it runs great now. Try your carbine buffers first on all of the ammo loads you're using, if it don't run properly then go to the heavier buffer. |
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