A barrel nut is the threaded fastener that clamps the barrel extension to the upper receiver on an AR-15. The LBE Unlimited ARBNT is a standard mil-spec barrel nut built for AR-15 upper receivers. Use it as a replacement part or to complete a new build — it seats on any mil-spec upper and torques with standard armorer’s tools. Made in the USA.
LBE Unlimited ARBNT Barrel Nut — Compatibility
The ARBNT barrel nut is designed for use with the standard AR-15 delta ring assembly and drop-in handguard systems. It is not compatible with free-float handguard systems, which require their own proprietary barrel nuts. For AR-15 builds using an 80% lower receiver paired with a mil-spec upper, this barrel nut will thread and torque correctly on any standard barrel extension.
Specifications
- SKU: ARBNT
- Compatible Platform: AR-15
- Type: Standard Barrel Nut
- Country of Origin: Made in the USA
- Manufacturer: LBE Unlimited
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