Product DescriptionUpgrade or complete your AR-15 build with the FN AR-15 premium barrel, built from U.S.-sourced Chrome Moly Vanadium steel to Mil-B-11595E standards for durability and consistent performance. This 16-inch, M16-profile, button-rifled barrel features a mid-length gas system and a chrome-lined bore and chamber to help resist corrosion, reduce heat erosion, and promote long service life. Each barrel is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to help ensure it is free of microstresses or flaws, while M4-style feed ramps and the barrel extension support smooth, reliable feeding. A matte black manganese phosphate (black phosphate) finish helps resist external corrosion and oxidation.Product Highlights 16-inch AR-15 barrel chambered in 5.56x45mm NATO with mid-length gas system for balanced handling Chrome-lined bore and chamber for corrosion resistance, reduced wear, and reliable extraction High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) for quality assurance Mil-spec Chrome Moly Vanadium steel (Mil-B-11595E) construction for strength and longevity M4-style feed ramps and barrel extension designed for consistent, dependable feedingSpecs Brand: FN Manufacturer Part Number: 20100041 UPC: 845737008475 Platform/Fit: AR-15 Caliber: 5.56x45mm NATO Barrel Length: 16 in Gas System Length: Mid-length Profile: M16 Rifling: Button rifled Material: Chrome Moly Vanadium steel (Mil-B-11595E) Bore/Chamber: Chrome lined Testing: HPT (High Pressure Tested), MPI (Magnetic Particle Inspected) Feed Ramps: M4 style Finish: Matte black manganese phosphate (black phosphate)Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.