The Faxon Firearms Duty Series 9mm barrel delivers reliable performance for Glock 19 builds with a precise 4.02" profile and a 1:10 twist, crafted from 4150 steel and finished in durable nitride for corrosion resistance and long-term wear. This broach rifled barrel combines precision machining with a clean, tight bore to promote consistent chamber pressures and predictable muzzle velocity, contributing to improved shot-to-shot accuracy in practical field and range applications. Designed to fit Glock 19 models from Gen 2 through Gen 5, it integrates seamlessly with existing frames and components while offering a proven platform for duty, competition, or personal defense setups. The Duty Series ethos is reflected in the meticulous manufacturing standards that emphasize reliability under varied conditions, ensuring clean cycling, reduced maintenance, and dependable performance over time. Whether upgrading a factory barrel for enhanced performance or building a dedicated 9mm pistol meant to perform under demanding scenarios, this 9mm barrel from Faxon Firearms provides a resilient foundation for accurate, repeatable shooting and consistent performance across a wide range of shooting disciplines.