Very flexible tool and the best bargain for an AR-10 builder
This is the best bargain for the best type of tool for your large frame AR building needs. You can either put a driver in it and fix that in a vice to use it like a reaction rod, or you can shim the nut into your vise and put this in your receiver to get precise torque on your upper.
Right tool for the job....
I did a barrel change to my AR10 and needed the proper tool to facilitate that. As always, Brownells has the proper tool, a barrel extension torque tool, that fit and functioned perfectly.
The installation of my match barrel went without a hitch. As hobbyist, I appreciate Brownells for having the tools needed to get a project done!
Best tool for the job
I recently purchased the 308 version of the barrel extension torque tool, after using the 223 / 5.56 version for several years. I consider this type of tool vastly superior to all other types of vise blocks I have tried. I bought a piece of 1/2 inch bar stock that I use to mount the torque tool on, which I can clamp in my bench vise to hold the upper in a vertical position. This leaves both hands free to torque barrel nuts, muzzle devices etc. with zero strain on the upper itself. Highly recommended.
Right tool for the job
Building a .308-AR, I had big concerns about applying 65 ft. lbs of torque to the barrel nut while supporting the upper in a vise. The barrel extension torque tool was the solution for that concern. With the barrel extension tool all of the torque is exerted at the barrel extension. The issue then was how to hold the armorers wrench while applying torque to the extension tool. My armorers wrench had three holes spaced about an inch apart. I drilled matching pilot holes into my bench and screwed the wrench to the table with the spanner end hanging over the table edge. I dropped the barrel down through the spanner opening and rested the barrel nut into the wrench. Then, with the wrench supporting the receiver and holding the barrel nut seated in the spanner, I torqued the barrel nut to 65 ft. lbs stepping up from 45 lbs in 5 lb increments stretching the threads three times each. My barrel is now mounted to specifications and my upper / barrel nut have zero marks or cracks as a result The only issue that I have is that it is a big, heavy, single purpose tool that I may never use again. Probably cheaper than paying to have it done.
308 assembly
I finally broke down and bought this and it makes assembly of the barrel to the upper receiver super easy. I wish I had this years ago. Also great to assist to change out a flash to a brake. It's got a little bit of weight to it but is worth every Penney if you do barrel changes often or full assemblies.
Must have tool for AR10 builders.
Does what it's supposed to do and much more economical than the competitors.
A solid useful tool
This tool helped me tighten down my barrel nut to the proper torque spec on my retro .308 build. The only downside here is that it is a little bit awkward to use with a wrench clamped into a vise but you will quickly adapt to it.
Best tool for the job
I have received this tool recently and am waiting for other necessary parts to arrive for my Aero Precision M5E1 build, so have not yet attached the barrel to the receiver. That being said, I HAVE used the smaller AR15 barrel extension torque tool on multiple builds and this one works exactly the same. The torque wrench fits in the end of this tool and is used to apply the necessary pressure while the barrel nut is held in place by the necessary wrench for its flats. I prefer NOT to place this wrench in a vise, but work with the whole project on a smooth, covered, flat surface and have done so with great success. A vise to hold the barrel wrench in place could, I guess, be useful, but I consider it unnecessary. If this extension tool is used as described in its instructions, fixing your barrel to the receiver is a piece of cake! Don't be fooled, I think flats on the tool might be useful, but that's not where the vise goes! If you really wanted to use this tool for a vise setup for work other than torquing the barrel nut, I suppose you could put a breaker bar into the vise and set the extension torque tool onto that for great work, but I just don't see that need. Just my opinion, YMMV.
Worked perfectly.
Worked perfectly to torque torque the barrel nut on my DPMS AR-10 and to remove the muzzle brake.
308 Barrel Extension Torque Tool
I used this tool to torque the barrel on an AR 10. I followed the instructions provided and also watched the video. The tool served it's intended purpose at a fraction of the cost of similar tools. The addition of flat sides would make this tool even more capable.
