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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
- BAR Shim Pack (4 shims)
- Material: Machined from Billet 7075-T6 Aluminum
- Coating: Anodized Black
- Torque with standard AR15 armorer's wrench
Please Note: All Aero Precision Handguards use the BAR interface. If you intend to connect an Aero Precision Handguard to a standard threaded upper receiver, you will need a BAR Barrel Nut. If you have Aero Precision's M4E1 Enhanced Upper Receiver, you do not need a BAR Barrel Nut as the barrel nut and rail mounting platform are forged directly on to the upper receiver itself.