Product DescriptionThe Ballistic Advantage Performance Series BA Hanson 11.3" 5.56 NATO carbine-length barrel is engineered for AR-15 builds that demand reliability and consistent performance in a compact configuration. It is machined from 4150 Chrome Moly Vanadium steel and finished in Black QPQ for enhanced corrosion resistance. This BA Hanson profile barrel features a Nickel Boron coated M4 feed ramp extension and includes a pinned low-profile gas block. Designed around a carbine-length gas system and a .625" low-profile gas block requirement, this barrel is not intended for use with aftermarket piston kits.Product Highlights Performance Series BA Hanson profile AR-15 barrel for compact 5.56x45mm NATO builds 4150 Chrome Moly Vanadium steel construction with durable Black QPQ corrosion-resistant finish Nickel Boron coated M4 feed ramp extension for smooth feeding and dependable cycling Carbine-length gas system with pinned low-profile gas block included Built for .625" low-profile gas blocks (1.00" gas block seat); not compatible with aftermarket piston kitsSpecs Brand: Ballistic Adv Series: Performance Series Profile: BA Hanson Caliber: 5.56x45mm NATO / .223 Remington Barrel Length: 11.30" Gas System Length: Carbine Material: 4150 Chrome Moly Vanadium steel Finish: Black QPQ Feed Ramps: M4 extension (Nickel Boron coated) Gas Block: Pinned low-profile gas block included; .625" low-profile gas blocks only Twist Rate: 1:7" Threaded: Yes Compatibility: Fits AR-15 UPC: 819747020826 Manufacturer Part Number: BABL556026FD Item Weight: 1.18 lbDisclaimer: 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.