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Posted: 3/24/2017 7:51:07 PM EDT
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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Posted: 3/24/2017 8:07:57 PM EDT
[#1]
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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Posted: 3/24/2017 8:12:31 PM EDT
[#2]
What gas system and barrel length?
I assume a collapsible (carbine) stock. "Slowing down" the action is still measured in milliseconds. |
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Posted: 3/24/2017 8:23:23 PM EDT
[#3]
Ok, so many people praised Spike's T2 buffer on that post due to it being between an H1 and H2 buffer in weight.
And based on the chart, it should work fine with a 16" barrel. Thank you for your reply! |
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Posted: 3/24/2017 9:10:21 PM EDT
[#4]
Fast is relative. You want the heaviest buffer that will cycle your weakest ammo. No matter how slow it will still be faster then you can pull the trigger. Don't use a powder buffer. A5 is proven more reliable.
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Posted: 3/24/2017 9:18:24 PM EDT
[#5]
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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Posted: 3/25/2017 9:54:44 AM EDT
[#6]
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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Posted: 3/25/2017 10:53:41 AM EDT
[#7]
Well with the ST-T2 being 4.1 oz compared to the 4.6oz on the H2 buffer, it may also work for me.
Atleast it's a good starting point I would assume. |
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Posted: 3/25/2017 12:55:51 PM EDT
[#8]
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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Posted: 3/28/2017 8:34:51 AM EDT
[#9]
Heavier buffers slow the weapon’s cyclic rate down.
I run H2 buffers and it is still faster than I pull the trigger. |
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Posted: 3/28/2017 10:39:12 AM EDT
[#10]
Quote HistoryQuoted:
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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Posted: 3/28/2017 11:50:18 AM EDT
[#11]
Quote HistoryQuoted:
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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Posted: 3/28/2017 12:05:22 PM EDT
[#12]
Quote HistoryQuoted:
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. Quote HistoryQuoted:
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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Posted: 3/30/2017 6:44:30 AM EDT
[#13]
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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Posted: 3/30/2017 7:35:13 AM EDT
[#14]
Quote HistoryQuoted:
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. Quote HistoryQuoted:
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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