308 AR Tools

by | May 23, 2014 | Tools | 0 comments

AR-10, DPMS LR-308, AR .308 AR Tools

       January 12, 2019 Update: It’s interesting to look at this page knowing it’s nearly nine years old as I type this. While this page is still relevant there has been so many changes to the platform with many new manufacturers building rifles there is also no shortage of smart people designing tools for working on all AR platforms. This page will not receive any additional updates, however there is a new page devoted to AR 308, AR-10 and G2 .308 AR’s. Click the following link to visit the new AR-10 .308 AR Tools Page.

The original content remains in tact below 

Much like their smaller AR15 siblings these large bore 308 AR rifles require very specific tools. Additionally there’s more information at my other sites on basic gunsmithing tools and AR 15 tools.

308 AR Barrel Extension Torque Tool

Picture of a Brownells 308 AR Barrel Extension Torque Tool

Brownells 308 AR Barrel Extension Torque Tool

The Brownells 308 AR Barrel Extension Torque Tool has a very misleading name. In fact my first impression after reading the title lead me to believe the 308 AR Barrel Extension Torque Tool was for tightening the barrel extension to the barrel. THAT IS NOT THE CASE. This tool is for preventing damage to your upper receiver when tightening the barrel nut.


Handy tool aids in applying straight-line torque for fast, easy installation of the barrel nut without scratching the exterior of the upper receiver. Helps ensure the right amount of torque is evenly applied, while maintaining proper alignment of the barrel, upper receiver, and gas tube ports. Use with any barrel nut wrench or free-float tube wrench and a torque wrench with a ½” square drive. Simply clamp the barrel nut wrench handle firmly in a bench vise, insert the barrel into the upper receiver, and finger tighten the barrel nut. Slide the barrel through the wrench, insert the Torque Tool in the back of the receiver until the teeth lock into the locking lugs in the barrel extension, and apply torque with the torque drive through the Tool to tighten the barrel nut. Precision machined from heavy-duty steel bar stock for years of reliable service. Available for the 308 AR.

DPMS .308 AR Panther Receiver Claw



Picture of a 308 AR Panther Receiver Claw

308 AR Panther Receiver Claw

The “Receiver Claw” is the perfect armorer tool for holding all DPMS .308 upper receivers. Made of a solid one piece high strength polymer, the Claw is extremely durable. Simply clamp the Claw into a bench vise, slide the upper onto the Claw, secure with the two holding pins and begin installing your barrel and components.


DPMS .308 AR Lower Receiver Vise Block – Action Block


The DPMS “308 AR Lower Receiver Vise Block” is similar to an AR15 vise block. The plastic block is inserted and locked into the magwell like a magazine. The block is then firmly clamped in a vise. This is a must have item for working on lower receivers.

Picture of a DPMS 308 AR Lower Receiver Vise Block - Action Block

DPMS 308 AR Lower Receiver Vise Block – Action Block



This DPMS 308 AR Barrel Nut Wrench will work with many AR-10,LR-308 and SR-25 free float handguards.

Picture of a DPMS LR-308/AR-10 Free Float Barrel Nut Wrench

DPMS LR-308/AR-10 Free Float Barrel Nut Wrench

PRI – AR-10 Barrel Nut Wrench


Heavy-duty PRI AR10 Barrel Nut Wrench provides plenty of leverage for installing and removing barrel nuts when used with a 3/8″ or ½” drive breaker bar, socket wrench, or torque wrench. Cut from 3/8″ thick steel, with plenty of metal so it won’t flex under pressure while transferring the torque evenly to the nut. Models available for AR-15/M16 and ArmaLite® AR-10®.

Picture of a PRI AR 10 Barrel Nut Wrench

PRI AR10 Barrel Nut Wrench

PRI Barrel Nut Wrench DPMS LR-308 (03-0086 ) – Same as the above except for the DPMS LR-308 barrel nut as well as many others.

308 AR Carbon Scraper

The 308 AR carbon scraper Used for cleaning out the bolt recess.

Picture of a 308 AR Carbon Scraper

308 AR Carbon Scraper

AR Barrel Nut Alignment Gauge

Not exactly 308 specific but this simple tool allows you to easily align the barrel nut gas tube hole and receiver gas tube hole while tightening the barrel nut. It’s a hardened steel pin precisely ground to the diameter of the gas tube hole and either the notches or holes in a barrel nut.

AR 308 Gas Tube Wrench

This is a handy tool for holding and positioning a gas tube on the 308 AR or AR-15. One wrench serves both weapons