Faxon Duty Threaded Barrel For G19

Give your Glock 19 a reliable, long-lasting upgrade with the Faxon Duty Series threaded barrel. Machined 100% in-house from stress-relieved 4150 CMV steel and finished with salt-bath nitride inside and out, this drop-in barrel delivers better-than-factory tolerances, a consistent tighter lockup, and long service life — all without gunsmithing. It’s conventionally rifled (button rifled and fully stress relieved) so you can run a wide range of 9mm ammunition — including cast-lead loads — and still get excellent accuracy and durability.

• Factory-drop fit: Designed to drop into factory-spec Glock 19 slides (compatible with Gen 2–5, including 19x and G45) with no gunsmithing required.
• Built for durability: Machined from stress-relieved 4150 CMV steel for strength, then treated with a salt-bath nitride finish to improve lubricity, corrosion/wear resistance, and barrel life.
• Ammo flexibility: Conventional rifling allows safe and reliable use with a wider variety of ammunition types (including cast lead).
• Suppressor / muzzle device ready: 1/2-28 TPI muzzle threads provide standard compatibility with common muzzle devices and suppressors.

This is a true drop-in replacement for Glock 19 slides — simply remove the factory barrel and recoil spring, drop in the Faxon barrel, reassemble, and you’re ready to go. Thread protector or muzzle device installation will require only a standard 1/2-28 tapped accessory. Always follow safe firearm handling practices and check headspace and function when changing barrels or major components.