The Wheeler Delta Series Professional Armorer's Wrench is an AR-15 multi-tool for building and maintaining rifles. One steel handle covers the castle nut, the mil-spec barrel nut and the muzzle device, and it has a 1/2-inch square drive so you can use it with a torque wrench.
Torque reference values are printed right on the handle, so you don't have to look them up while you work. Use it for barrel swaps, installing a buffer tube or receiver extension, and fitting a muzzle brake or flash hider.
Features:
The barrel nut wrench is made for mil-spec style barrel nuts. Many free-float handguards use a proprietary nut that needs the wrench supplied with that handguard, so check your handguard's instructions first. When you torque a barrel nut, support the upper in a proper upper receiver vise block instead of clamping the receiver directly. Stake the castle nut after torquing if your build calls for it.
The 1/2-inch drive lets you use the wrench with your own torque wrench for accurate values, rather than going by feel. Read the torque value for each job from the handle, and check it against your barrel or handguard maker's spec, which comes first.
