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2/14/2016 1:02:59 PM EDT
Everything was going well. And then, a fail to fire. Drop the mag, and the charge handle would retract. So, take it down and find the end of my buffer under the hammer. This buffer assembly came with my Luth MBA 1 stock. I need some help or advice on a better buffer and spring. A guy at the range showed me a buffer in his pistol build, he said he had made from titanium. Below is the link to the part I original purchased for this build. Any help or advice would be greatly appreciated.

http://www.amazon.com/gp/product/B00Y3SY8KS?psc=1&redirect=true&ref_=oh_aui_detailpage_o03_s00

2/14/2016 1:12:22 PM EDT
[#1]
I didn't copy and paste your link, but I live by the rule of not buying AR parts from Amazon.

Anyhow, give details and pics of your receiver extension, gas system, etc.  What does the buffer retainer look like?
2/14/2016 1:13:15 PM EDT
[#2]
If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.
2/14/2016 1:14:30 PM EDT
[#3]
Get Colt or LMT parts and go in peace.
2/14/2016 1:31:44 PM EDT
[#4]
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I didn't copy and paste your link, but I live by the rule of not buying AR parts from Amazon.

Anyhow, give details and pics of your receiver extension, gas system, etc.  What does the buffer retainer look like?
View Quote


.936 non adjustable low profile gas block, mid length gas tube. Going to break it down and have a look at the retainer and buffer tube now. 18" Wilson Arms Bull Barrel
2/14/2016 1:40:14 PM EDT
[#5]
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Quoted:
If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.
View Quote


Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him
2/14/2016 1:46:48 PM EDT
[#6]
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Quoted:


Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him
View Quote View All Quotes
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Quoted:
Quoted:
If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.


Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him



He is an idiot.  You can't swap a rifle and a carbine buffer.
2/14/2016 2:19:44 PM EDT
[#7]

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He is an idiot.  You can't swap a rifle and a carbine buffer.
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Quoted:


Quoted:

If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.




Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him






He is an idiot.  You can't swap a rifle and a carbine buffer.
Sure you can, Put a spacer in the RE and use a carbine spring and buffer.



 
2/14/2016 2:34:15 PM EDT
[#8]
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Sure you can, Put a spacer in the RE and use a carbine spring and buffer.
 
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If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.


Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him



He is an idiot.  You can't swap a rifle and a carbine buffer.
Sure you can, Put a spacer in the RE and use a carbine spring and buffer.
 


Do you think the random guy at the range that told him to swap understood any of that?
2/14/2016 2:43:39 PM EDT
[#9]
Wanting only the highest quality parts for this rifle, is this the best choice?

http://www.jprifles.com/buy.php?item=JPSCS-15
2/14/2016 2:48:32 PM EDT
[#10]
That's a gamer part.  I would get this:

http://www.bravocompanyusa.com/Rifle-Buffer-M16-AR15-p/buffer%20rifle.htm
2/14/2016 2:49:39 PM EDT
[#11]
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Do you think the random guy at the range that told him to swap understood any of that?
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Quoted:
Quoted:
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If it is just a standard A2 ar buffer i would just get a name brand or US made one. http://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-buffers/ar-15-m16-rifle-buffer-prod71339.aspx Brownells has many different springs to choose from also.


Yes its a standard A2 Buffer. Some knucklehead at the range said to get an H2 Buffer, but I'm not sure about that or him



He is an idiot.  You can't swap a rifle and a carbine buffer.
Sure you can, Put a spacer in the RE and use a carbine spring and buffer.
 


Do you think the random guy at the range that told him to swap understood any of that?


 I doubt it, you would have to have seen this guy, mullet sportin, wannabe biker, with a lisp. He approached me when he saw my rifle open
2/14/2016 2:52:30 PM EDT
[#12]
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That's a gamer part.  I would get this:

http://www.bravocompanyusa.com/Rifle-Buffer-M16-AR15-p/buffer%20rifle.htm
View Quote



I'm sorry, a "gamer part" ? Please explain, kinda new to this, not up on the lingo
2/14/2016 2:56:53 PM EDT
[#13]
Go to bravo company web site.  Order your ar15 shit from there.  They have done right for me many times and their stuff won't shit the bed.
2/14/2016 3:08:57 PM EDT
[#14]
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2/14/2016 3:11:17 PM EDT
[#15]
That... looks like a failed sub-standard part.
2/14/2016 3:12:22 PM EDT
[#16]
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I'm sorry, a "gamer part" ? Please explain, kinda new to this, not up on the lingo
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Quoted:
That's a gamer part.  I would get this:

http://www.bravocompanyusa.com/Rifle-Buffer-M16-AR15-p/buffer%20rifle.htm



I'm sorry, a "gamer part" ? Please explain, kinda new to this, not up on the lingo


A part for a rifle meant for shooting sports, not meant for reliable or rugged use.
2/14/2016 3:13:54 PM EDT
[#17]
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Get Colt or LMT parts and go in peace.
View Quote


^^^^^^^^^^^^^^^^^^^^^
Best post in this topic so far............................That's the way to go if you want quality parts.
2/14/2016 3:19:18 PM EDT
[#18]
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That... looks like a failed sub-standard part.
View Quote



I have seen that on some really old nessard kit guns.  The buffer was turned from a cylinder and the face was a threaded plug which stripped out under the pounding of the weights.  Geniuses made the plug the same diameter as the hole in the rear end of the bolt carrier.
2/14/2016 3:19:55 PM EDT
[#19]
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^^^^^^^^^^^^^^^^^^^^^
Best post in this topic so far............................That's the way to go if you want quality parts.
View Quote View All Quotes
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Quoted:
Quoted:
Get Colt or LMT parts and go in peace.


^^^^^^^^^^^^^^^^^^^^^
Best post in this topic so far............................That's the way to go if you want quality parts.



That link I provided will get him with a top-notch replacement part.
2/14/2016 3:20:29 PM EDT
[#20]
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That... looks like a failed sub-standard part.
View Quote



That is exactly what you are seeing.
2/14/2016 3:23:17 PM EDT
[#21]

Ultimate Arms Gear Parts





not a vendor of choice for rifle operation parts




maybe a UAG softcase or an angled handgrip, or a chainsaw grip

but never firecontrol parts
2/14/2016 3:26:41 PM EDT
[#22]
No reason to over pay for a standard part. Shipping can make a difference though. https://www.stagarms.com/a2-buffer-assembly/
2/14/2016 3:40:04 PM EDT
[#23]
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That link I provided will get him with a top-notch replacement part.
View Quote View All Quotes
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Quoted:
Quoted:
Quoted:
Get Colt or LMT parts and go in peace.


^^^^^^^^^^^^^^^^^^^^^
Best post in this topic so far............................That's the way to go if you want quality parts.



That link I provided will get him with a top-notch replacement part.


Just ordered this, Thanks Heavy
2/14/2016 3:44:59 PM EDT
[#24]
Even DPMS makes buffers that don't break themselves.



I would check brownells, dsgarms and damage industries. Then I would probably buy whichever one was cheapest delivered.




Colt, LMT and Bravo Company all make great parts if your willing to spend a few dollars more.




I would be comfortable using any of the above along with DPMS, Armalite, Stag, Bushmaster, High Standard, RRA, Damage Industries, Windham Weaponry and pretty much any other name brand.
2/14/2016 4:52:41 PM EDT
[#25]
Removed the stock and did a magnified VI of the buffer tube. All good. Should receive new buffer mid to end of next week. Below is a pic of the buffer and where the failure occurred. Going to do an inventory and see if I have anything else from Ultimate Arms Gear. Thank you for all the advice and response.

2/14/2016 4:58:01 PM EDT
[#26]
The weight inside the buffer, slides loose back and forth I assume as the weapon cycles. Seems like this shock loading from the rear as well as the impact of the BCG from the front could have added to the resulting failure. Are all the weights in these buffers loose, is this common?
2/14/2016 5:28:54 PM EDT
[#27]
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Quoted:
The weight inside the buffer, slides loose back and forth I assume as the weapon cycles. Seems like this shock loading from the rear as well as the impact of the BCG from the front could have added to the resulting failure. Are all the weights in these buffers loose, is this common?
View Quote



Not just common, but intended.  The sliding weights counteract bolt bounce- the tendency for the bolt and carrier to bounce back out of battery after slamming home.  On a full-auto gun, bolt bounce could cause a failure to fire if the auto sear drops the hammer as the bolt and carrier are coming back.  The sliding weights in a proper buffer keep the bolt and carrier in battery, ready for the hammer to fall.  

While unnecessary on nearly all semi auto rifles, it's the standard way to build a buffer.  It also opens up the option for replacing one or more steel weights with tungsten to tune a gun.
2/14/2016 5:36:30 PM EDT
[#28]
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Not just common, but intended.  The sliding weights counteract bolt bounce- the tendency for the bolt and carrier to bounce back out of battery after slamming home.  On a full-auto gun, bolt bounce could cause a failure to fire if the auto sear drops the hammer as the bolt and carrier are coming back.  The sliding weights in a proper buffer keep the bolt and carrier in battery, ready for the hammer to fall.  

While unnecessary on nearly all semi auto rifles, it's the standard way to build a buffer.  It also opens up the option for replacing one or more steel weights with tungsten to tune a gun.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
The weight inside the buffer, slides loose back and forth I assume as the weapon cycles. Seems like this shock loading from the rear as well as the impact of the BCG from the front could have added to the resulting failure. Are all the weights in these buffers loose, is this common?



Not just common, but intended.  The sliding weights counteract bolt bounce- the tendency for the bolt and carrier to bounce back out of battery after slamming home.  On a full-auto gun, bolt bounce could cause a failure to fire if the auto sear drops the hammer as the bolt and carrier are coming back.  The sliding weights in a proper buffer keep the bolt and carrier in battery, ready for the hammer to fall.  

While unnecessary on nearly all semi auto rifles, it's the standard way to build a buffer.  It also opens up the option for replacing one or more steel weights with tungsten to tune a gun.


Wow, thanks for the detailed response. Being new to this, I'm trying to soak up as much knowledge as I can. And, it seems I've came to right place.
2/14/2016 7:05:00 PM EDT
[#29]
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Wow, thanks for the detailed response. Being new to this, I'm trying to soak up as much knowledge as I can. And, it seems I've came to right place.
View Quote



You're welcome, and this is a great site.  Hope you get your rifle up and running soon.
2/14/2016 8:06:01 PM EDT
[#30]
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You're welcome, and this is a great site.  Hope you get your rifle up and running soon.
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Wow, thanks for the detailed response. Being new to this, I'm trying to soak up as much knowledge as I can. And, it seems I've came to right place.



You're welcome, and this is a great site.  Hope you get your rifle up and running soon.


While its down I'll break the BCG down and clean, and I also noticed alot of aluminum in my FC well. Thats got to go. Been about 300 rounds through it so the barrel probably needs a gentle clean. Thanks again
2/14/2016 11:50:06 PM EDT
[#31]
Buffer works like a deadblow hammer.
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