Brownells 308-AR Barrel Extension Torque Tool

Manufactured by Brownells
SKU: 100571
MPN: 080-001-040WB
Manufactured by Brownells
1 Review

In Stock

NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.

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This handy tool makes installing the barrel nut on your DPMS / SR-25 pattern .308 rifle faster, safer, and easier than ever! When used properly, this tool ensures proper alignment of the barrel and allows for torque to be evenly applied with the 1/2" square socket machined into the end. Precision machined from heavy-duty steel bar stock, this tool is sure to provide years of reliable service!
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TypeReceiver Block - .308

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

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Great tool Great Price, could use some simple improvements

by -

Great tool. Like others have said, it could have benefited from the flat sides similar to the Geissele. I used a breaker bar in a vise with notches and it worked just fine. I will likely tig weld a piece of square stock in there when I have time, but I knew I could get it to work as it was. It held from rotating just fine but by the time you throw an upper, a 5lb barrel and a 65ft lb torque on er she gets a little squirrly from tipping.
<br>The tool gives you about 3" out the bottom / back side of the upper to secure, so plenty of ways to get creative.