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BCM
Durkin Tactical Franklin Armory
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Posted: 8/23/2017 3:24:41 PM EDT
Any recommendations for buffer tubes?

The PWS EBT Mod 2 seems good to go. Expensive though.
Link Posted: 8/23/2017 3:33:15 PM EDT
[#1]
Link Posted: 8/23/2017 5:18:31 PM EDT
[#2]
So long as it's 7075 and mil-spec dimensions, I have no brand loyalty on receiver extensions.
Link Posted: 8/23/2017 5:36:48 PM EDT
[#3]
A Mil-Spec sized tube for a carbine.
Link Posted: 8/23/2017 5:44:50 PM EDT
[#4]
It really does not matter who you get it from, if it is a .mil spec tube they all work the same way.
Link Posted: 8/23/2017 5:46:08 PM EDT
[#5]
Link Posted: 8/23/2017 6:35:43 PM EDT
[#6]
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Quoted:
So long as it's 7075 and mil-spec dimensions, I have no brand loyalty on receiver extensions.
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I'm in this camp. Toms tactical has 7075-t6 mil spec 6 position buffer tube kits for like $36, it's so budget friendly that I never run any 6061 buffer tubes except for a few rifle length buffer tubes
Link Posted: 8/23/2017 6:46:03 PM EDT
[#7]
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Quoted:


I'm in this camp. Toms tactical has 7075-t6 mil spec 6 position buffer tube kits for like $36, it's so budget friendly that I never run any 6061 buffer tubes except for a few rifle length buffer tubes
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Anderson has them for $20. Seems to work great. My first one did have bad agonizing or pitting inside the tube, but got it exchanged from vendor.
Link Posted: 8/23/2017 7:34:37 PM EDT
[#8]
Link Posted: 8/23/2017 7:41:07 PM EDT
[#9]
Link Posted: 8/23/2017 7:50:52 PM EDT
[#10]
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Quoted:
I'm going to give the Magpul receiver extension a try when I can find one for sale.
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Is it available in A5 length?
Link Posted: 8/23/2017 8:22:40 PM EDT
[#11]
Link Posted: 8/23/2017 10:09:31 PM EDT
[#12]
ALG makes a good 7075 tube for a decent price.

Doesn't really matter much, though.  Buy the cheapest 7075 tube from a known manufacturer you can find and it will work fine.
Link Posted: 8/24/2017 10:27:34 AM EDT
[#13]
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Quoted:
Don't think so.
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Quoted:
Quoted:
Is it available in A5 length?
Don't think so.
https://www.magpul.com/products/magpul-enhanced-receiver-extension-sr25-m110
Link Posted: 8/24/2017 4:17:05 PM EDT
[#14]
Link Posted: 8/25/2017 10:23:10 AM EDT
[#15]
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Quoted:
That looks nice.
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Oh, I agree... An A5 tube with 10 positions is hard to beat.
Link Posted: 8/25/2017 10:46:15 AM EDT
[#16]
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Quoted:
Is it available in A5 length?
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It is https://www.magpul.com/products/magpul-enhanced-receiver-extension-sr25-m110 .  BCM and VLTOR make these as well . Number of extensions vary between brands
Link Posted: 8/25/2017 11:57:26 AM EDT
[#17]
I am ok with the Brownell’s house brand tube.
I have one in use, but not many rounds through the weapon.
Link Posted: 8/25/2017 1:19:33 PM EDT
[#18]
Bought a buffer tube made by POF. Has similar features to the PWS EBT Mod 2 at a lower price.

https://pof-usa.com/shop/upgrades-accessories/buffer-components/buffer-tube-anti-tilt-6-position/
Link Posted: 8/25/2017 7:30:49 PM EDT
[#19]
I have enjoyed the Vltor A5 tube. I run it in on a 14.5" build.
Yes, it takes a proprietary buffer but it really has made shooting a carbine more liken to shooting a rifle in terms of softness and recoil jolt.

https://www.vltor.com/shop/ar/stocks/aebk-a5-vltor-a5-stock-combo-kit/
Link Posted: 8/26/2017 3:11:11 PM EDT
[#20]
It won't matter to most people, but there's a difference between mil spec size and actual mil spec. IIRC, true spec tubes are extruded, with rolled threads for strength.
Link Posted: 8/26/2017 4:05:46 PM EDT
[#21]
Link Posted: 8/26/2017 4:26:47 PM EDT
[#22]
You do have to be careful, there are a lot of tubes on the market right now that were made in China and even if they say they are 7075, I am willing to bet the majority are actually 6061.  I have run into a few of them over the last couple of years.
Link Posted: 8/26/2017 4:43:51 PM EDT
[#23]
Link Posted: 8/26/2017 6:20:35 PM EDT
[#24]
Sons of Liberty Gun Works
7075 steel, mil spec
On sale for $30
Link Posted: 8/26/2017 6:46:36 PM EDT
[#25]
Link Posted: 8/26/2017 7:03:37 PM EDT
[#26]
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Quoted:



How did you determine that they were actually 6061?
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My Partner with his machine shop also has the ability to test different metal materials to see if he is getting what he orders for many critical jobs he does for government contracts, part of the contracts he signs, he has to be able to guarantee they are what they spec out.
Link Posted: 8/26/2017 8:56:50 PM EDT
[#27]
Link Posted: 8/26/2017 9:31:51 PM EDT
[#28]
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Quoted:



I'd be interested in the method/s used. I have not found any nondestructive method as of yet.

Chemical testing is FUBAR with the anodizing process, contaminating the results.
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This above, you would have to destroy a buffer tube to figure out if it were 6061 or 7075.
Link Posted: 8/26/2017 9:51:13 PM EDT
[#29]
LMT
Link Posted: 8/26/2017 10:04:07 PM EDT
[#30]
Link Posted: 8/26/2017 10:16:45 PM EDT
[#31]
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Quoted:


XRF (X-Ray Fluorescence) is non destructive but about $10k investment.

Flame photometry or atomic absorption spectroscopy are closely related methods, but involve destructive testing. These methods are most commonly used in material composition testing.
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I never said it was non destructive, where did you guys get the idea I did? virtually ever single piece of metal he tests is destroyed, including the buffer tubes we have tested..

10K is nothing, he has several millions dollars of machines in his shop.  But again, I never claimed it was non destructive...

LOL
Link Posted: 8/26/2017 10:22:20 PM EDT
[#32]
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Quoted:
LMT
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If you are talking about Lewis Machine and Tool, no, that is not him, but he has done several projects in conjunction with them in the past.
Link Posted: 8/26/2017 10:37:11 PM EDT
[#33]
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