Real Avid Master-Fit Wrench, Stainless Steel, Extended & Standard Castle Nut 

MASTER GRADE AR15 CROWFOOT ARMORER’S WRENCH

Master-Fit ½” Crowfoot Wrenches are purpose built and specialized for precise fitment to minimize marring on gun parts. Constructed of titanium coated stainless steel, delivering the highest level of precision to confidently apply torque to AR platform.

DESIGNED SPECIFICALLY FOR GUN NUTS

Now you can say I’ve got a wrench for that! No more rigging and adapting generic wrenches to complete your builds.

Crowfoot wrench for buffer tube extended and standard barrel nuts.

The Extended Castle Nut Wrench is designed to work with buffer end plates with sling attachments and some barrel nuts.
The Master-Fit Extended & Standard Castle Nut Wrench is purpose built and specialized for precise fitment to confidently deliver torque to buffer tube’s extended and standard castle nuts. Titanium coated stainless steel construction provides tight tolerances for solid nut-gripping strength and enhanced no-slip tool control. When paired with the Master-Fit ½” Drive Torque Wrench, this Master Grade combo will take your gun building experience to a whole new level. The Master-Fit ½” Drive Crowfoot Wrenches also work with any standard ½” drive wrench.