Crafted from precision-machined 4150 chrome moly vanadium steel this 17.7" BA Hanson heavy profile barrel offers durability and consistent accuracy. Finished with advanced QPQ corrosion resistance it delivers a long lifespan for rigorous shooting conditions. Its nickel boron-coated extended M4 feed ramp ensures smooth feeding while the mid-length gas system enhances reliable cycling. The pinned low-profile gas block and 1:7" twist provide excellent compatibility with various loads. Threaded 1/2x28 TPI for superior attachment versatility this barrel is perfect for your 5.56 NATO or .223 Remington builds. Proven performance with innovative BA Hanson engineering.