The Faxon Firearms Duty Series AR15 Barrel 5.56NATO 1:8 Twist 4150 Nitride - 16" | Pencil Profile | Mid Length delivers reliable performance for precision and duty-inspired builds alike, featuring a 16" black nitride 4150 steel barrel with a pencil-style profile for a sleek balance of weight, balance, and rigidity. Designed to handle the demands of sustained accuracy, this barrel uses a mid-length gas system and a 1:8 twist rate to stabilize a broad range of 5.56x45mm NATO ammunition while preserving muzzle control and heat management during extended shooting sessions. The Nitro-coated nitride finish enhances corrosion resistance and surface hardening, contributing to long service life in adverse conditions. Built to fit AR-15 platforms, this barrel is an ideal choice for shooters seeking consistency from a proven duty-series lineage, whether assembling a precision rifle, a dependable duty rifle, or a versatile field firearm. Its mid-length geometry supports smoother operation and manageable recoil, enabling rapid follow-up shots and repeatable groupings without sacrificing durability or performance in varied environments.