Geissele Automatics 10169 Reaction Rod Steel 223 Rem 5.56x45mm NATO AR15/M4/M16

The Geissele Reaction Rod® (5.56/.223) makes the removal and installation of barrels, flash hiders, gas blocks and hand guards much easier and simpler. It is designed to be gripped in a bench vise and the upper receiver is slid onto the rod so the rod’s integral splines enter the barrel extension to secure it from turning. This allows all the torque from barrel nut wrenches to go directly into the barrel extension, preventing damage to the upper receiver and eliminating the need to remove sights and mounts from the receiver’s rail. Made from solid 4140 Chrome Moly steel, quenched and tempered, and ground to a precise diameter for smooth, straight fit without wobble.