LBE Unlimited ARBNT308 AR-10 Barrel Nut 4130 Steel Black Phosphate

The LBE Unlimited ARBNT308 Barrel Nut delivers precision-engineered barrel retention for AR-10 platform rifles. Manufactured from 4130 steel with black phosphate coating, this barrel nut provides the secure interface between upper receiver and barrel extension that accuracy demands.

What Makes This Different

Unlike standard aluminum barrel nuts that can gall or strip under high torque applications, the ARBNT308 utilizes 4130 steel construction for superior thread integrity. The black phosphate finish resists corrosion while maintaining proper torque specifications through multiple installations. This barrel nut accommodates standard AR-10 barrel extensions with precise thread engagement that eliminates play between components.

Key Features

• 4130 steel construction for maximum thread strength and longevity
• Black phosphate coating provides corrosion resistance and wear protection
• Standard AR-10 threading compatible with DPMS pattern upper receivers
• Precision-machined threads ensure proper headspace and barrel alignment
• Heat-treated steel maintains torque specifications under thermal cycling
• Compatible with standard barrel nut wrenches and armorer's tools
• Mil-spec dimensions for consistent fit across manufacturers

Field performance depends on proper installation torque between 30-80 foot-pounds depending on manufacturer specifications. The steel construction handles the thermal stress of rapid-fire scenarios without loosening, maintaining zero retention through extended shooting sessions. Professional armorers and serious builders choose steel barrel nuts for precision rifle builds where accuracy consistency matters most.

Technical Specs

• Material: 4130 steel with black phosphate finish
• Threading: Standard AR-10/DPMS pattern
• Torque specification: 30-80 ft-lbs (follow manufacturer guidelines)
• Compatibility: AR-10 upper receivers and barrel extensions
• Tool requirement: Standard barrel nut wrench
• Weight: Approximately 2.5 oz
• Country of origin: USA

This barrel nut represents the foundation component that serious builders demand for precision AR-10 assemblies. The steel construction eliminates the common failure points associated with softer materials, ensuring your build maintains accuracy standards shot after shot.