The Real Avid Master-Fit Crowfoot Wrench is a master grade AR-15 1/2" crowfoot armorers wrench purpose built and specialized for precise fitment to confidently deliver torque to both 20-hole and 4-hole free-float barrel 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 1/2" Drive Torque Wrench (not included), this Master Grade combo will take your gun building experience to a whole new level. The Master-Fit Crowfoot Wrench also works with any standard 1/2" drive wrench.
