The FN AR-15 5.56mm NATO 18 inch rifle-length gas system barrel is cold hammer forged and chrome lined for dependable feeding, corrosion resistance, and improved heat erosion resistance. It’s finished in matte black manganese phosphate and built using FN’s standard quality checks to help deliver consistent performance.

Key features

• Cold hammer forged chrome moly vanadium steel for durability
• Chrome lined bore and chamber to help resist corrosion and heat erosion
• Rifle length gas system for traditional AR-15 cycling characteristics
• M4 style feed ramps for consistent feeding
• Matte black manganese phosphate (black phosphate) exterior finish for corrosion resistance

Upgrade or replace your AR-15 barrel with an FN barrel designed for long service life and consistent operation.