FN AR-15 10.5" 5.56 NATO Carbine Barrel

FN AR-15 Carbine Barrel: Built for Reliability

FN manufactures this premium AR-15 barrel using U.S. sourced Chrome Moly Vanadium steel, meeting Mil-B-11595E specifications. Every barrel undergoes rigorous quality control to ensure consistent performance.

Quality Assurance

• High Pressure Testing (HPT): Each barrel is tested to verify safe operation under maximum chamber pressures
• Magnetic Particle Inspection (MPI): Detects microscopic flaws and stress points that could compromise reliability
• Chrome-lined bore and chamber: Resists corrosion and heat erosion, extending barrel life significantly

Design Features

The 10.5" carbine length gas system balances velocity and handling characteristics ideal for modern tactical applications. The M16 profile barrel provides the strength needed for sustained fire while maintaining practical weight.

M4 style feed ramps and barrel extension ensure consistent feeding and reliable extraction across all ammunition types. The matte black Manganese Phosphate finish provides durable external corrosion resistance without adding unnecessary weight.

The Bottom Line

This is a serious barrel built to military standards. Whether you're building a duty rifle or a precision carbine, FN's attention to material quality and manufacturing process delivers the consistency you need when reliability matters.