Heavy-duty wrench provides plenty of leverage for installing and removing barrel nuts when used with a 3/8" or ½" drive breaker bar, socket wrench, or torque wrench. Cut from 3/8" thick steel, with plenty of metal so it won’t flex under pressure while transferring the torque evenly to the nut. Models available for AR-15/M16, ArmaLite®. Armorer’s AR-15/M16 model has a built-in 10"-long handle for convenience, plus additional holes between pins help with proper gas tube alignment. Still includes 3/8" and ½" drive cutouts.