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Posted: 3/24/2017 7:51:07 PM EDT
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Hello!
This is my second post here. I am building an AR15 that I will be using for standard range shooting, maybe even some 3-gun. I am currently trying to buy all parts required to assemble my lower receiver. I am, however, confused about the buffer weight. I have heard that a heavyweight buffer may slow the gun down and prevent it from cycling at its normal rate. I am looking specifically at the Spike's Tactical kit, which includes their T2 buffer, which is a 'Heavy Buffer' based on their website. Is that a good buffer or should I buy a lighter one? I will be using a 16" stainless steel barrel on my AR15 with a 1:7 twist. Buffer kit I was talking about: https://www.joeboboutfitters.com/Spikes_Tactical_6pos_Milspec_Carbine_Stock_Kit_p/sp-sla500r-k.htm?CartID=7 Thank you! 
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There is a chart (link provided) on this ARFCOM post.
Might be a good place to start. ARFCOM Post - buffer question Let me Google that for you... :-) mm |
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I realize that, the problem I have is this is my first build. Sadly, I cannot afford to buy multiple buffers and test them. Based on the reviews of the T2 buffer, I may go with that.
It's lighter than an H2, heavier than an H1 and for my first build, I think that's a reasonoble purchase. Or does anyone know anything inherently wrong with the ST-T2 buffer? |
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KAK sells an adjustable buffer kit for about $45 and comes with everything to assemble any weight buffer.
KAK adjustable buffer kit |
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Quoted:
Shot timer doesn't lie. I discovered I'm significantly faster on followup shots (26% faster) using the lighter carbine buffer in my 16" middys than with the H2 buffer. Tomac |
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Quoted:
Well, there can be a number of reasons for this, but the faster cyclic rate isn't likely one of them. Mainly, because the increase in cyclic rate between a H2 and a 3.75 oz buffer is only about .008 second, at most. The time to complete one full cycle of firing, unlocking, extracting, ejecting, feeding and locking is around .075 second for a H2 and .067 second for a standard buffer.... More reciprocating weight imparts more momentum during recoil and recoils slightly stronger, so more muzzle rise (however slight). The same principle that ensures the bolt closes more securely when going home, works against your shoulder on the recoil stroke. |
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Quoted:
More reciprocating weight imparts more momentum during recoil and recoils slightly stronger, so more muzzle rise (however slight). The same principle that ensures the bolt closes more securely when going home, works against your shoulder on the recoil stroke. Quoted:
Quoted:
Well, there can be a number of reasons for this, but the faster cyclic rate isn't likely one of them. Mainly, because the increase in cyclic rate between a H2 and a 3.75 oz buffer is only about .008 second, at most. The time to complete one full cycle of firing, unlocking, extracting, ejecting, feeding and locking is around .075 second for a H2 and .067 second for a standard buffer.... The same principle that ensures the bolt closes more securely when going home, works against your shoulder on the recoil stroke. |
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You need to pick a buffer for the most reliable weapon. Lighter buffers will allow the action to operate faster, often faster than the brass can shrink therefore you run into extraction problems with some hot ammo in a carbine. A heavy buffer will not slow you down nearly as much as brass that stays in the chamber.
My follow-up shots are much better with a heavy buffer. If you do the 3 gun race gun thing, well they go with lighter buffers but also use adjustable gas blocks and turn them down quite a bit. A H2 in a carbine is still much faster than what most people can use. If you had a full auto gun you may notice it spending money at a slightly slower rate. |
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Quoted:
More reciprocating weight imparts more momentum during recoil and recoils slightly stronger, so more muzzle rise (however slight). The same principle that ensures the bolt closes more securely when going home, works against your shoulder on the recoil stroke. Quoted:
More reciprocating weight imparts more momentum during recoil and recoils slightly stronger, so more muzzle rise (however slight). The same principle that ensures the bolt closes more securely when going home, works against your shoulder on the recoil stroke. Quoted:
It also causes more sight disruption when the bolt closes. All of that will lead to longer split times. Also, mileage may vary. Some people, myself included, find a slightly heavier buffer better for speedy, accurate shooting. |
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