The NSR Barrel Nut Wrench is a 1-1/16″ wrench adaptor for NSR handguard installation. This works for our Gen1 and Gen3 N4 Barrel nut. If you are looking for a Gen4 N4 wrench, please use our 1 1/4″ wrench.
— 3/8″ STEEL CONSTRUCTION
— ZINC PHOSPHATE FINISH
— ACCEPTS 3/8″ OR 1/2″ BREAKER BAR/SOCKET WRENCH
While customers can get many uses out of this wrench, it is designed to be a one time use item and should be inspected after each use