The NineX19 Match Threaded Barrel is a drop-in performance upgrade for factory OEM Glock 43 and Glock 43X slides. Machined from stress-relieved and heat-treated 416R stainless steel, it combines precise chamber and locking geometry with a 1:10 twist rate, updated barrel hood design, and deep target crown.
The threaded muzzle allows the installation of a compatible suppressor or thread-on compensator while retaining the Glock 43 and Glock 43X factory slide-length configuration.
Features
- Designed for factory OEM Glock 43 and Glock 43X slides
- Machined from stress-relieved and heat-treated 416R stainless steel
- Broach-cut rifling with a 1:10 twist rate
- Optimized for common 9mm bullet weights from 115 through 147 grains
- Updated barrel hood design
- Deep-cut target crown
- Threaded muzzle for compatible suppressors and compensators
- Designed as a drop-in component for compatible factory slides
- Made in the USA
Glock 43 and Glock 43X Compatibility
The Glock 43 and Glock 43X use the same slide-length and barrel family. This barrel fits factory OEM Glock 43 and Glock 43X slides despite the differences between their grip frames and magazine configurations.
The Glock 48 uses a longer slide and barrel and is not compatible with this Glock 43-length barrel.
Threaded-Barrel Applications
The extended threaded muzzle allows the installation of a compatible suppressor or thread-on compensator. Confirm the muzzle device’s thread specification, bore clearance, and installation requirements before use.
A compensator redirects expanding gases to counter muzzle rise, while a suppressor reduces muzzle blast and sound when used with the appropriate ammunition and equipment. Either configuration may affect recoil-system requirements and ammunition sensitivity.
Fitment
Compatible with:
- Factory OEM Glock 43 slides
- Factory OEM Glock 43X slides
- Compatible Glock 43-pattern aftermarket slides
Not compatible with:
- Glock 48 slides
- Glock 19, Glock 17, or other double-stack Glock slides
- Slides using a different barrel length or locking geometry
Aftermarket slide dimensions can vary. NineX19 guarantees fitment only with the factory-pattern models specifically listed for this product.
Available Finishes
- Black Nitride
- Gunmetal
- Gold Nitride
Current availability is shown in the finish selection menu above.
Ammunition and Function Testing
The 1:10 twist rate is designed to stabilize common 9mm bullet weights, including widely used 115-, 124-, and 147-grain ammunition.
After installation, inspect the pistol for proper fit and operation. Safely function-test the completed configuration with the recoil spring assembly, ammunition, and muzzle device you intend to use before relying on it for defensive, duty, or competition use.
Important Legal Notice
Threaded barrels are restricted in certain jurisdictions. It is the customer’s responsibility to understand and comply with all federal, state, and local laws governing the purchase, possession, installation, and use of threaded barrels and muzzle devices.
Disclaimer
This product is not manufactured, authorized, endorsed, sponsored by, or otherwise associated with GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols. References to GLOCK models are used only to identify compatibility with NineX19 products.
GLOCK is a federally registered trademark of GLOCK, Inc. and GLOCK Ges.m.b.H.









Michael (verified owner) –
These are the best in the buiz. I’ve bought many aftermarket parts and built a lot of tools. I like these even more than other more expensive barrels I have bought. If you have questions, they promptly respond with a friendly tone. Give these a try now!