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The FN 20-100039 is a premium AR15 button rifled barrel from FN, constructed with U.S. sourced Chrome Moly Venadium, in accordance with Mil-B-11595E standards. Rigorously tested, each barrel undergoes High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to eliminate microstresses and flaws. This stringent quality control process ensures we deliver a consistently high-performing product.
To maximize barrel durability and longevity, the bore and chamber are lined with chrome. This lining provides strong resistance against both corrosion and heat erosion, which in turn greatly enhances the barrel life and ensures reliable chambering and extraction. Engineered for seamless operation, the barrel features M4 style feed ramps and a barrel extension for steady feeding.
In terms of aesthetics, the barrel boasts a matte black Manganese Phosphate finish. This not only contributes to its sleek appearance, but also acts as a protective shield against external corrosion and oxidation, further enhancing its durability and longevity.
FN A15 premium button rifled barrels are are manufactured using U.S. sourced Chrome Moly Venadium material per Mil-B-11595E. Each barrel is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure that it is free of micrstresses or flaws resulting in consistency and quality in every barrel shipped from the factory. The bore and chamber are chrome lined to help resist corrosion and provide resistance to heat erosion which greatly improves barrel life and reliable chambering / extraction. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation.