FAXON DUTY SERIES BARREL FOR G34 GEN 2-4 9MM

Pistol Barrels › For Glock® › For G34

Fit and Compatibility

This barrel is a direct replacement for the factory barrel in Glock® 34 Gen 2, Gen 3, and Gen 4 slides. It is machined to tight tolerances for consistent lockup, and it drops into factory-spec slides with no gunsmithing. On some aftermarket slides, minor fitting may be needed.

Aftermarket slides: there is a known compatibility issue with some Zaffiri Precision slides (ZPS.3v2 and ZPS.6 patterns) because of top-window size and placement.

How It’s Made

Every Faxon pistol barrel starts as a long 4150 CMV barrel blank that Faxon rifles in-house before it is ever cut into pistol barrels. That way the whole blank gets the same rifling, inspection, and stress relief, and every barrel cut from it starts from a qualified bore.

1. Drill and ream: 4150 CMV bar gun-drilled and reamed as a long blank
2. Button rifle: Button rifled 1:10, six grooves
3. Air gauge: Bore and rifling air gauged
4. Stress relieve: Stress relieved in-house after rifling, just like Faxon rifle barrels
5. Cut and qualify: Blank cut to length and qualify-turned true to the bore
6. Turn and mill: Hood, lugs, and profile turned and milled; 9mm SAAMI chamber and target crown cut
7. Finish: Salt-bath QPQ nitrided inside and out
8. Mark and inspect: Laser-marked and final inspected

Six-groove button rifling is land-and-groove rifling, not polygonal, so it runs jacketed and cast lead bullets. Salt-bath QPQ nitride is a diffusion treatment, not a plating: it hardens the bore and exterior and adds corrosion resistance and lubricity while adding virtually nothing to the dimensions.

How We Inspect It

Faxon pistol barrels are built to a written control plan, and each run is logged on inspection sheets. Here is what this barrel goes through before it ships.

What’s in the Box

What Owners Say

This barrel doesn’t have reviews on FaxonFirearms.com yet. If you own one, tell other shooters how it runs in the review section below.

Every Faxon Barrel for the G34 Gen 2–4

Duty Series G34 Gen 2–4 Barrel FAQs

Is this barrel drop-in?

Yes. It is a direct replacement for the factory barrel in Glock® 34 Gen 2, Gen 3, and Gen 4 slides with no gunsmithing on factory-spec slides. Some aftermarket slides may need minor fitting.

How is it rifled?

Button rifled, 1:10 twist, with six grooves. Faxon rifles a long blank in-house, air gauges the bore and rifling, and stress relieves it before cutting it into pistol barrels.

Can I shoot cast lead bullets?

Yes. Six-groove button rifling is land-and-groove rifling, not polygonal, so it runs both jacketed and cast lead bullets.

What is the difference between Duty Series and Match Series pistol barrels?

Duty Series barrels are 4150 CMV in an OEM-style profile with salt-bath nitride inside and out. Match Series barrels are 416-R stainless, heat treated for pistol-barrel hardness, and come in fluted profiles and PVD color options.

What finish is it?

Salt-bath QPQ nitride, inside and out.

Where is it made?

In Greater Cincinnati, Ohio. Pistol barrels ship without an FFL.

GLOCK® is a federally registered trademark of GLOCK, Inc. and GLOCK Ges.m.b.H. Faxon Firearms is not affiliated with or endorsed by them; model names are for compatibility only. Flame Fluted® and EXOS® are trademarks of Faxon Firearms. Know and follow all federal, state, and local laws.