FN America AR-15 20" Barrel 1:7 Twist Button Broached, Black - 20100043

Unveiling the FN AR-15 premium button-rifled barrels, meticulously handcrafted from domestically sourced chrome moly vanadium, adhering meticulously to the exacting Mil-B-11595E specifications. Every single barrel undergoes an exacting regime of High-Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to ascertain a flawless, micro-stress-free performance by unveiling even the most subtle imperfections. The integration of a chrome-lined bore and chamber forms an unyielding defense against both corrosion and heat-driven erosion, a vital partnership that confers an unparalleled extended barrel life and ensures a consistent chambering and extraction process. Bolstered by M4-style feed ramps and a precision-engineered barrel extension, seamless and uninterrupted feeding is a given, while the resolute matte black manganese phosphate finish serves as an impervious armor against external corrosion and oxidation. Our expansive lineup spans 5.56x45mm barrels boasting a variety of profiles and gas system lengths, spanning from the compact 10.5 inches Government Carbine to the commanding 20 inches Government Rifle. All these attributes coalesce to exemplify an unswerving dedication to quality and uniformity, encapsulated within each barrel as they leave the factory floor.