Product DescriptionThe Ballistic Advantage Modern Series 16-inch HBAR (Heavy Barrel) is a 5.56 NATO chambered rifle barrel built from Chrome Moly Vanadium (CrMoV) steel for strength and longevity. It features a QPQ corrosion-resistant finish and a QPQ-coated M4 feed ramp extension to support reliable feeding. With a mid-length gas system, 1:7 rifling twist, and 1/2x28 muzzle threads, this barrel is well-suited for AR-15 builds needing a heavier SPR (Special Purpose Rifle) profile for stable handling and consistent performance.Product HighlightsDurable CrMoV (Chrome Moly Vanadium) steel construction for demanding useQPQ corrosion-resistant finish with QPQ-coated M4 feed ramp extension16-inch Heavy Barrel (HBAR) / SPR profile for added rigidity and steadier shootingMid-length gas system for balanced cycling characteristics1:7 rifling twist and 1/2x28 threaded muzzle for broad compatibility with 5.56 setupsSpecsBrand: Ballistic AdvantageSeries/Model: Modern SeriesCaliber/Chamber: 5.56 NATOBarrel Length: 16 inProfile: HBAR (Heavy Barrel), SPR (Special Purpose Rifle) profileRifling Twist Rate: 1:7Gas System Length: Mid-LengthMuzzle Threads: 1/2x28Feed Ramps: M4 (QPQ coated extension)Material: CrMoV steelFinish: QPQ corrosion resistantManufacturer Part Number: BABL556017MUPC: 819747020239Disclaimer: 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.