Precision Reflex DPMS/KAC 308 Barrel Nut Wrench – 22 & 24 Hole

Description

Building or re-barreling an AR-10 pattern rifle means getting the barrel nut torqued to spec, and this is the tool Precision Reflex made for exactly that job. The DPMS/KAC 308 Barrel Nut Wrench lets you apply the precise amount of pressure the barrel nut needs when you're mating the barrel to the receiver, which keeps things square and consistent instead of eyeballing it with a makeshift tool.

What Makes This DPMS/KAC Wrench Worth Grabbing

It's cut from 3/8 high strength steel with four lugs on each side, and that two-sided design is the real selling point. One side handles DPMS barrel nuts that use a 24-hole pattern on a .845 radius, and the flip side fits KAC or DPMS 22-hole patterns on the same radius. So instead of buying two separate wrenches for two common nut styles, you've got both covered in one piece. It carries a black nitride finish, which is a nice touch on a tool that's going to see repeated use at the bench.

Pairing the 308 Barrel Nut Wrench With Your Torque Setup

This wrench works with any 3/8 or 1/2 drive torque wrench, so it slots right into the setup most folks already own. That's what separates a proper install from a guess. You set your torque wrench to the spec your barrel nut or handguard manufacturer calls for, drop this adapter onto the nut, and pull it to the number. Builders working on platforms like the Aero Precision M5 and various 6.5 Creedmoor AR-10 variants have had good luck with the fit, since those share the DPMS-pattern lineage.

One thing worth knowing up front: this is built for free float barrel nuts and will not remove DPMS Delta ring barrel nuts, so keep that in mind if you're working on an older-style setup. For free float rail installs on .308 and 7.62×51 builds, though, it's a straightforward, heavy-duty tool that does one job and does it well.