Good castle nut wrench - NcSTAR Pro Series AR Barrel Lower Receiver Wrench

Used this wrench to disassemble a stubborn castle nut and loctite'd carbine buffer tube. The pincher-shaped feature is made to use on a carbine buffer tube. You'll have to remove your stock (pull out position lock as far out a possible, then slide stock off of tube) to use this wrench. The other end of the wrench has a ⅝" open end wrench size. This wrench fits a CMMG AR15 barrel nut that surprised me when I bought a CMMG keymod aftermarket handguard. The wrench has square holes for either ⅜ or ½ inch torque wrenches