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AR 556 Barrel Nut

This is a discussion on AR 556 Barrel Nut within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Ok, so here is the issue: I'm tryin to remove the stock barrel nut and I'm having some problems. I have the gas block and ...


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Old May 13th, 2015, 08:15 PM   #1
 
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AR 556 Barrel Nut

Ok, so here is the issue:

I'm tryin to remove the stock barrel nut and I'm having some problems.

I have the gas block and tube off. The weapon is mounted to a vise using a geissele reaction rod. I'm using a high quality armors wrench and a breaking bar. I can't seem to get it to break free.

I've used lube and let it sit for a while. I've used some heat, though not a ton. At the moment I have it sitting in my freezer as I've read that it call help in conjunction with heat afterwards. I've used a hammer to hit the wrench to try to break the nut free. I'm at a loss here. Is there something I'm missing that is Ruger AR 556 specific? Tips, tricks, long shots etc would be helpful. At this point I'm not sure what else to try besides a pipe wrench and even then I don't think that will help much more than what I've already tried.

The barrel nut doesn't have to be used again. As long as I can get it off without hurting the upper I'll be happy. Thanks for any help.



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Old May 14th, 2015, 03:25 AM   #2
 
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Had the same problem. First it is helpful to have an extra set of hands. One to hold your wrench on the nut the other to do the wrenching. My brother and I used a 3 foot piece of pipe to fit over the wrench handle for better leverage, after using a torch to heat the nut. Worked like a charm. I know the frustration you are feeling but hang in there and good luck.
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Old May 14th, 2015, 07:10 AM   #3
 
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It must have thread locking compound on it. Heat the nut with a torch and then wrench it. Normal torque spec shouldn't require great torque to remove.
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Old May 14th, 2015, 08:29 AM   #4
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It must have thread locking compound on it. Heat the nut with a torch and then wrench it. Normal torque spec shouldn't require great torque to remove.
I agree, normal torque specs are 30 ft lbs to 80 ft lbs. You can try using an armorers wrench, and a rubber mallet, that has worked for some other stubborn bolts for me the trick is have someone hold tension with the wrench, then knock the piss out of it, the jarring motion or shock will usually do the trick. Not all armorers wrenchs are created equal, what kinda wrench are you using? I use the pri wrench which has the capability to use a 3/8 or 1/2 torque wrench or pull handle. Used it many many many times, always does the job. I wonder why they possibly used loctite when a lubricant like antisieze is usually needed to get the proper nut torque. It would seem the loctite would give an erratic torque reading.
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Old May 14th, 2015, 08:33 AM   #5
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Here is what I use, works for milspec barrel nuts, and lots of aftermarket barrel nuts like the yankee hill and troy free float barrel nuts.



http://www.amazon.com/PRI-AR-15-Barr.../dp/B003XEJXK8
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Old May 14th, 2015, 11:52 AM   #6
 
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Finally...

Thanks all for the advice. I thought I was never going to be able to get it off without cutting.

In the end I was able to get the barrel nut off by leaving it in the freezer while at work. When I got home I took it out put it on the reaction rod and was ready to do battle.

My entire weapon was covered in frost. I put on the armor's wrench and breaker bar and gave it a test run. I put around 20% of the force I had in my pre freezer attempts and it turned. I was in honest to God shock. The nut turned like it had 30lb of torque...

Thanks again for all the help. I may be back as I now have to get everything together now. I put in the geissele dmr trigger last night. That was cake compared to that dang nut!
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Old May 16th, 2015, 06:52 AM   #7
 
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Why are you guys removing the barrel from this fine shooting Ruger
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Old May 16th, 2015, 05:23 PM   #8
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Why are you guys removing the barrel from this fine shooting Ruger
Probably to free float it, or add a rail of some sort.
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Old January 28th, 2017, 03:25 PM   #9
 
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What direction do you turn the barrel nut to take it off?
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Old January 28th, 2017, 04:58 PM   #10
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What direction do you turn the barrel nut to take it off?
Normally lefty loosey righty tighty, all the ar's I have done have been this way. Make sure to remove the gas tube first.
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Old February 1st, 2017, 06:27 AM   #11
 
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Quote:
Originally Posted by Wadelura1911 View Post
What direction do you turn the barrel nut to take it off?


Counter-clockwise since it's a normal thread. As said remove the gas tube first.
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Old February 1st, 2017, 07:43 AM   #12
 
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Why are you guys removing the barrel from this fine shooting Ruger
Free float handguard or a BETTER barrel.......of which the list is long
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Old February 5th, 2017, 08:44 AM   #13
 
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If I may, I bought an SR 556 in NC which was manufactured for the State restrictions of NY. As a legal note, the weapon will never ever return to NY. It does not have a flash suppressor on it. My gunsmith told me it takes a special wrench to remove the barrel so he can turn it to thread it. Any help would be greatly appreciated.

Regards,
Jim
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Old February 5th, 2017, 12:04 PM   #14
 
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It takes an AR15 Armorers wrench to remove barrel nut. They are easy to find.
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Old February 5th, 2017, 01:56 PM   #15
 
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Quote:
Originally Posted by msp3903 View Post
It takes an AR15 Armorers wrench to remove barrel nut. They are easy to find.


The SR-556 is not the same as the AR-556, it's a free float rail.
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