NC Star Pro Series AR Lower Receiver Wrench

Manufacturer: NC Star

SKU: 4705-0386

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Heavy duty purpose built M4 castle nut wrench for collapsible stock buffer tubes. Large heavy duty cross section makes it easier on the hands to work on your AR lower receiver. The castle nut wrench slips over the castle nut and nearly encompasses the castle nut for a more secure fit when installing or removing the M4 castle nut. The other end of the wrench is for installing/removing A2 Rifle buffer tubes (?")". 1/2" and 3/8" drive compatible, for torquing your barrel nuts to the proper torque specifications.