Noveske Barrel Nut Features The Noveske Barrel Nut is purpose-built for third generation N4 handguard systems specifically the NSR NHR NSR-SD and NQR lines. Its reversible design allows a builder to flip the nut for precise indexing of the handguard helping achieve correct timing without swapping parts or shimming. Included 1 1/16 inch wrench flats give armorers and builders a solid purchase point for proper torque during installation. This attention to fit and function reflects the same engineering standard Noveske applies across its barrel and handguard systems. Finished in manganese phosphate the barrel nut resists corrosion and wear while standing up to repeated installation and removal during builds or upgrades. It is important to note that this nut does not fit fourth generation Noveske handguards so builders should confirm their handguard generation before ordering. Pairing the correct barrel nut with its matching handguard generation ensures proper fitment and the structural integrity the system depends on. The Noveske Barrel Nut is a precise purpose-built replacement part for sale at GrabAGun for anyone maintaining or building a third generation Noveske upper. Noveske Barrel Nut Specifications Manufacturer: Noveske Model: Barrel Nut Type: Barrel Nut Color: Black Finish: Manganese Phosphate Compatible Hosts: Noveske NSR NHR NSR-SD NQR Handguards 3rd Gen N4 Available At: GrabAGun