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View Full Version : buffer tube stuck onto stock UBR (pic inside)


gant
05-29-2012, 10:00 PM
i got this lower in a trade, i went to take off the stock from the gun

loosening this screw, the entire stock/buffer goes out with it, i know this screw is suppose to come out by itself, that way you can slide the stock off, then you can take off the buffer

but this screw turns the buffer tube , while i can take off the entire assembly i cant seprate the stock and the buffer tube, i reassembled everything and it was a pain making sure the spring for the rear take down stayed straight while i turned the entire stock onto it

my guess is, loctite was possibly used i know the screws come with blue loctite on them but thats suppose to come out, i believe red loctite might of been used on top of it, i asked the old owner but he doesnt know

question i can tighten everything down good, but since the screw is tightening down the buffer tube instead of a wrench would that be of any concern? like said i can tighten it down really good, im thinking of taking a air tool to it tomorrow but my guess it will just spin with the buffer.


http://farm9.staticflickr.com/8020/7300098138_923b54b4c3_b.jpg (http://www.flickr.com/photos/vallejo707/7300098138/)
Untitled (http://www.flickr.com/photos/vallejo707/7300098138/) by 707Photography.org (http://www.flickr.com/people/vallejo707/), on Flickr

clutchy
05-29-2012, 10:46 PM
uh... I believe the UBR has an integrated buffer tube.

Jicko
05-29-2012, 10:55 PM
Do you have the manual?

http://cdn.magpul.com/downloads/UBR%20-%20Military%20Information%20Guide%20080314.pdf

And this can be useful too:
http://www.weaponevolution.com/forum/showthread.php?71-Magpul-UBR-install-guide-and-pictorial-review

loosewreck
05-29-2012, 11:15 PM
I hate the thread locker on those screws Magpul sends out, makes them seem out of spec. Good luck, wish there was something I could suggest to help, but everything I could think of, like using heat or a vice would most likely result in damaging your UBR. Maybe its best to email them or pm one of their guys over on AR15.com or M4carbine.net.

tuna quesadilla
05-29-2012, 11:20 PM
uh... I believe the UBR has an integrated buffer tube.

This is correct.

The UBR uses a semi-proprietary buffer tube.

It is neither a standard rifle tube nor a standard carbine tube.

So if you're taking off the UBR with the intention of reusing the buffer tube -- there are only two stocks in the known AR15 universe that use the same buffer tube, and they are the RRA Entry stock and the Sully stock. If you are not planning on installing either of those stocks, and if the buffer tube is not defective or in need of replacement, there's no point in separating the UBR from its buffer tube.

Gts408
05-30-2012, 12:20 AM
If I rember, do u see screw on the left in your pic by where u put your cheek. There should be two on each side. Unscrew those four and the rear one than u should be able to remove the stock from the buffer tube. I have to double check on mine.

gant
05-30-2012, 2:57 AM
Well what if I want to transfer the stock to another lower ? Since both come out its a little. It harder to install both at same time , what im getting at is it normal for this screw not to come out

Exile Machine
05-30-2012, 3:48 AM
It is neither a standard rifle tube nor a standard carbine tube.
... there are only two stocks in the known AR15 universe that use the same buffer tube, and they are the RRA Entry stock and the Sully stock....

The entry tube also fits several ACE stocks, and there are many customers using this as a pistol buffer tube for their AR pistol or Hammerhead (https://www.exilemachine.net/shop/exile-machine-hammerhead-ar-15-grip-black-1.html) featureless setup. We have this tube in stock (https://www.exilemachine.net/shop/rra-receiver-extension-tube-ret-entry-length-43.html) if you end up destroying yours.

https://www.exilemachine.net/images/IMG_0513_C.JPG

gant
05-30-2012, 3:53 AM
Exile will it also come with the screw for the back? Like shown in my pix

Exile Machine
05-30-2012, 3:58 AM
Exile will it also come with the screw for the back? Like shown in my pix

Nope, it's tube-only.