Product DescriptionThe Ballistic Advantage Performance Series BA Hanson 12.3-inch barrel is built for compact AR-15 builds chambered in 5.56x45mm NATO. Machined from Chrome Moly Vanadium (CrMoV/4150 CMV) steel and finished in a black QPQ corrosion-resistant treatment, it is designed for durability and consistent performance. The Performance Series design includes a Nickel Boron coated extended M4 feed ramp extension to support reliable feeding, and the Hanson profile uses a carbine-length gas system for a proven, adaptable setup.Product Highlights 12.3-inch BA Hanson profile AR-15 barrel chambered in 5.56x45mm NATO for compact builds Chrome Moly Vanadium (CrMoV/4150 CMV) steel construction for strength and longevity Black QPQ corrosion-resistant finish for enhanced wear and rust protection Nickel Boron coated extended M4 feed ramp extension for dependable feeding Carbine-length gas system and threaded muzzle for common AR-15 compatibilitySpecs Brand: Ballistic Adv Series/Model: Performance Series (BA Hanson) Platform Fit: AR-15 Caliber/Chamber: 5.56x45mm NATO (also compatible with .223 Remington per distributor listing) Barrel Length: 12.3 in Gas System Length: Carbine Barrel Material: Chrome Moly Vanadium (CrMoV / 4150 CMV) Finish: Black QPQ (corrosion resistant) Twist Rate: 1:7 Muzzle Threads: 1/2x28 Gas Block Journal: .750 in (journal seat length listed as 1.03 in by distributor) Barrel Extension: Nickel Boron coated extended M4 feed ramp extension Testing: HP and MPI tested (per distributor listing) Weight: 22 oz (with gas block, per distributor listing) Manufacturer Part Number: BABL556033F UPC: 819747020819Disclaimer: 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.