FAXON DUTY SERIES THREADED BARREL FOR G19 GEN 2-5 9MM
Faxon
$99.00
Faxon Duty Series Threaded Barrel for G19 Gen 1-5 9mm Nitride
Faxon's Duty Series Pistol Barrels for G19 / Glock® 19 are machined 100% in-house from stress-relieved 4150 CMV steel. These barrels are then given a black Nitride coating to increase lubricity, barrel life, and resistance to surface wear. All barrels are conventionally rifled to allow a wider range of ammunition to be used, including cast lead. The barrels drop into factory-spec slides with no gunsmithing required. Better-than-factory tolerances ensure a consistent, tighter lockup than OEM.
The Faxon Duty Series Threaded Barrel for Glock® G19 (Gen 1-5, including G19X & G45) delivers rugged duty-grade performance with suppressor-ready versatility. Featuring a threaded muzzle and full salt bath nitride finish inside and out, this barrel is engineered for hard use, defensive applications, and custom builds where reliability is paramount.
Key Benefits
- 4150 CMV Steel: Only the best steels for durability, longevity, and accuracy.
- 9mm SAAMI Chambers: Superior accuracy with complete SAAMI compatibility & boring reliability.
- Tighter Tolerances: Drop-in, yet better fitment and lock-up.
- Conventional Rifling: Fully compatible with cast bullets.
- 11 Degree Target Crown: Consistent bullet release for enhanced precision.
- Salt Bath Nitride Finish: Maximum corrosion resistance and lubricity inside and out.
- Threaded Muzzle: Ready for suppressors, compensators, or thread protectors.
Specifications
Why Choose the Duty Series
The Duty Series utilizes tough 4150 CMV steel and a complete salt bath nitride treatment for exceptional durability and corrosion resistance in demanding conditions. The threaded muzzle adds suppressor or compensator capability while maintaining full drop-in compatibility with generations 1-5 Glock® 19 platforms.
Installation & Compatibility
- Drop-in fit for factory-spec Glock® G19 slides (Gen 1-5, including G19X & G45) — no gunsmithing required.
- Important Note: Known compatibility issue with some Zaffiri Precision slides (ZPS.3v2 and ZPS.6 patterns) due to top window size/placement.
- 1/2-28 threads accommodate common 9mm compensators, suppressors, and adapters.
- Conventional rifling supports cast lead and jacketed bullets.
- Tighter-than-OEM tolerances for improved lockup and accuracy.
Frequently Asked Questions
Is this barrel drop-in?
Yes — direct replacement in factory Glock® G19 Gen 1-5 slides (including G19X & G45) with no modifications needed.
What finish is applied?
Salt bath nitride inside and out for maximum lubricity, wear resistance, and corrosion protection.
Can I use this with a suppressor?
Yes — the 1/2-28 threaded muzzle is compatible with most 9mm suppressors and compensators.
Is cast lead ammo safe?
Absolutely — conventional rifling allows safe use of cast lead bullets.
Will this work with aftermarket slides?
Compatible with most factory and aftermarket slides, but there is a known issue with certain Zaffiri Precision patterns (ZPS.3v2 and ZPS.6) due to top window placement.
Overview: Duty Series Threaded Barrel for Glock® G19
The Faxon Duty Series Threaded Barrel for Glock® G19 Gen 1-5 in Black Nitride provides hard-use reliability and suppressor-ready performance. Machined from stress-relieved 4150 CMV steel with conventional 1:10 twist rifling, SAAMI-spec chambers, and an 11° target crown, this drop-in barrel exceeds OEM standards for fit, function, and durability.
Fully salt bath nitrided inside and out, threaded for accessories, and backed by Faxon’s precision manufacturing, this barrel is the ideal upgrade for defensive, duty, or suppressed G19 builds.
Disclaimer: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Faxon nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.
- Caliber:
- 9mm
- Barrel Profile:
- Drop In, Duty Series
- Barrel Material:
- 4150 CMV
- Finish:
- Salt Bath Nitride
- Rifling Twist Rate:
- 1:10
- Muzzle Thread:
- 1/2x28
- Handgun Type:
- Glock® G19 Gen 2-5
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Reviews
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Threaded Barrel / Glock
Perfect fit up, great finish and excellent performance.
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G19 Duty series threaded barrel
Good drop in fit. Group sizes are great with this barrel, slightly better than with factory barrel,which was not bad,but I needed a threaded one.