The Faxon Firearms AR-15 pinned gas block 5.56x45 NATO rifle barrel delivers a compact, reliable platform for builders and enthusiasts seeking a high-performance 10.5\" option with Gunner contour and Gunner nitride finish. This black 10.5\" barrel features a 1-8 twist, muzzle threads of 1/2-28, and a pistol gas system design that balances maneuverability with controllable recoil, making it well-suited for compact builds, home defense variants, or sport shooting setups in 5.56 NATO. The pinned gas block ensures a clean, sturdy alignment, while the Gunner profile provides a proven blend of accuracy and heat management under rapid-fire scenarios. With its robust 1.1 lb weight and AR-15 compatibility, this barrel pairs seamlessly with standard upper receivers and accessories to create a streamlined platform for precise target shooting or reliable field use. The black finish not only adds a stealthy aesthetic but also resists wear in demanding environments, enhancing longevity and consistent performance across diverse conditions. Ideal for builders seeking a dedicated, purpose-built 5.56 NATO barrel that respects form, function, and the demands of practical shooting.