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 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 Standard Castle Nut Wrench is designed to work with your standard upper end plate and castle nuts.
