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Swapping out your Glock 19 barrel for the Faxon Duty Series is one of the easiest upgrades you can make, and one of the most rewarding if you're chasing tighter groups or want to run a suppressor. It's a true drop-in fit for Gen 2 through Gen 5 slides, including the G19X and G45, so there's no gunsmithing, no fitting, and no reaming. Field strip your pistol, pull the factory barrel, drop this one in, run a function check, and you're back in business.
Faxon machines these barrels 100% in-house from stress-relieved 4150 CMV steel, then coats them inside and out with salt bath nitride for added lubricity, corrosion resistance, and a longer service life. The 1/2×28 threaded muzzle wears a thread protector out of the box and accepts most 9mm suppressors, compensators, and muzzle devices, including Faxon's own EXOS line. There's also an O-ring on the barrel shoulder that lets you snug a can down to proper torque and back it off just as easily.
The accuracy story comes down to fit and machining. These barrels are cut to tighter tolerances than OEM, so you get a more consistent lockup shot to shot. Add in the 1:10 twist, a SAAMI-spec 9mm chamber, and an 11-degree target crown for clean, even bullet release, and folks regularly report groups noticeably tighter than the factory tube.
Unlike Glock's factory polygonal rifling, this barrel uses conventional button rifling. That opens the door to a wider range of ammo, cast lead rounds included, which is a real plus if you shoot a lot of reloads or budget range fodder. One tip from folks who've run these: the barrel ships with a heavy coat of protective grease, so give it a good cleaning before the first range trip. Backed by Faxon's Lifetime Guarantee, it's a well-built, no-nonsense upgrade for carry, home defense, or a custom build.
Yes. It's a true drop-in replacement for factory-spec Glock 19 slides across Gen 2 through Gen 5, including the G19X and G45, with no fitting or modification needed. You just field strip the pistol, remove the factory barrel, drop this one in, and run a function check. Keep in mind that some aftermarket slides with different window geometry, such as certain Zaffiri Precision patterns, can have fitment quirks.
The muzzle is threaded 1/2×28, which is the standard for 9mm, so it's compatible with most major suppressor brands, compensators, and muzzle devices, including Faxon's EXOS comp line. A thread protector comes installed to keep the threads clean when you're running bare. There's also an O-ring on the barrel shoulder that helps you torque a can down and remove it easily.
You can. Unlike Glock's factory polygonal rifling, this barrel uses conventional button rifling, which safely handles cast lead bullets and a wider range of ammunition. That makes it a favorite for anyone who shoots a lot of reloads or budget range ammo.
Give it a thorough cleaning first. These barrels ship with a heavy protective coating of grease inside the bore and on the threads to guard against rust in shipping and storage. Wipe it down and run a few patches through before you load up, and you'll be good to go.
| UPC | 816341022171 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GA910N19NGQT |
| Barrel Length | 4.5" |
| Caliber/Gauge | 9mm |
| Color | Black |
| Length | 7.7500 |
| Model | |
| Product Type | Barrel |
| Sights | No |
| Style | Threaded |
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