The Faxon Firearms Duty Series Glock G17 Threaded Barrel 4150 - Black Nitride delivers a purpose-built upgrade for shooters seeking enhanced performance from a trusted name in handgun barrels, featuring a THREADED FULL-SIZE BARREL FOR GLOCK 17 GEN 1-4 that pairs precision dimensions with a durable finish. Crafted from 4150 steel and finished in black nitride, this barrel blends rugged strength with corrosion resistance to withstand the demands of daily carry, duty, and training applications. The frame is constructed from steel to provide enduring rigidity, while the threaded termination supports popular muzzle devices and compensators for improved control and reduced recoil, helping you maintain rapid follow-up shots and consistent accuracy. Condition is new, reflecting factory standards and modern manufacturing techniques that ensure a tight, repeatable chamber and reliable performance across a range of ammunition. The barrel is designed to fit Glock G17 pistols across generations 1 through 4, offering a straightforward upgrade path for competitive shooters, professionals, and enthusiasts alike who value precision machining, consistent bore integrity, and a clean, low-profile aesthetic. This Faxon upgrade elevates reliability, controls muzzle rise, and expands customization options without compromising form or function.