The Faxon Firearms AR-15 pinned gas block 5.56x45 NATO rifle barrel is a precision-crafted core component designed to deliver reliable performance in a compact, maneuverable package. This 10.5-inch pencil contour barrel, finished in black, features a 1-8 twist rate and a carbine gas system for balanced accuracy and smooth cycling with a variety of 5.56x45 NATO ammunition. The pinned gas block ensures a rigid, dependable fit that resists movement under hard use, while the 1/2-28 muzzle threads provide versatile compatibility with common suppressors and devices. At a lightweight 0.9 pounds, this barrel keeps the rifle nimble without sacrificing rigidity, making it an excellent choice for compact rifles, home defense setups, or close-quarters engagements where rapid target acquisition matters. Its AR-15 compatibility and robust nitride finish resist wear, corrosion, and heat, supporting long-term durability in field conditions. This barrel serves as a solid foundation for a reliable rifle build, enabling hunters, competition shooters, and tactical enthusiasts to pair proven Faxon engineering with a compact profile that excels in reliability, balance, and straightforward installation for dependable performance in the field or range.