Gunsmithing Barrel nut torque specs?

[IdahoMike]

Dont worry guys I USED the search tool...

My question is this, with an armorers tool is there is slick way of getting your barrel nut torque in spec on a AR15? I hand tightened then reefed it to the next hole in the nut. Should I be fine, or is this something anyone has done, and had problems with? Or would I be better off puttin' the crimp on it and using a dremel to deal with any tooth that may get in the way?

 

[nicholst55]

Re: Barrel nut torque specs?

The torque specs on the AR-15/M16 barrel nut are 30-80 ft-lbs. If you don't have a torque wrench, buy one from Harbor Freight, and do the job right. There really is a benefit to applying Moly grease to the receiver threads and torquing the nut three times, like the book says to.

In my experience, it's usually difficult to go much beyond 30 ft-lbs without stripping teeth off the barrel nut when you're using the issue wrench. If you can't get the nut to align with the gas tube hole, either buy a better wrench, or AR15barrels.com sells barrel nut shims. Only <span style="font-style: italic">back-yard hacks</span> (read: <span style="font-style: italic"><span style="font-weight: bold">rank amateurs</span></span>) grind teeth off the barrel nut IMHO.

http://www.ar15barrels.com/prices.shtml

 

[frog5215]

Re: Barrel nut torque specs?

I'm a back yard hack, and I wouldn't DREAM of grinding a barrel nut for gas tube alignment.

 

[IdahoMike]

Re: Barrel nut torque specs?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: frog5215</div><div class="ubbcode-body">I'm a back yard hack, and I wouldn't DREAM of grinding a barrel nut for gas tube alignment. </div></div>

Thats what I thought, I saw someone in another thread (search tool) saying thats what they do if they cant get the nut to spec. and no one said nothin' about it so I thought I'd ask.

 

[IdahoMike]

Re: Barrel nut torque specs?

thanks Nicholst55