Aero Precision BAR Barrel Nut with Shim Pack for AR-15

BAR Barrel Nut Features The AR15 Bar Barrel Nut is used to connect BAR style handguards to standard threaded upper receivers. This product comes with 4 shims to properly time the gas tube with the upper receiver. BAR Barrel Nut Specifications Material: Machined from Billet 7075-T6 Aluminum Coating: Anodized Black Torque with standard AR15 armorer s wrench (Does not work with MagpulA(R) Armorer s Wrench) Supports Mil-Spec AR-15 barrels with outer diameters up to .998"