Fits Glock 23 Gen 1-4 9mm Conversion Barrel Threaded

This is a 9mm conversion barrel for the Glock 23, specifically designed for Gen 1 through Gen 4 models. If you own a .40 S&W Glock 23 and want to shoot cheaper, more available 9mm ammunition with a simple barrel swap, this is the part you need. It features a threaded muzzle, adding the capability to attach compensators or muzzle devices. Manufactured to strict tolerances, this barrel provides a reliable and cost-effective way to expand your pistol’s versatility without buying a whole new firearm.

Key Features

• Direct drop-in conversion for Glock 23 .40 S&W to 9mm Luger.
• Precision-machined from 416R stainless steel for durability and corrosion resistance.
• Threaded muzzle (1/2×28) accepts common 9mm suppressors and compensators.
• Compatible with Glock 23 Gen 1, Gen 2, Gen 3, and Gen 4 frames.
• Uses your existing Glock 23 magazines for reliable 9mm feeding.
• CNC-machined with a fully supported chamber for enhanced safety and accuracy.

Built For

This barrel is ideal for Glock 23 owners who train frequently and want to reduce ammunition costs by switching to 9mm, or for shooters who want the option of a threaded barrel for their existing pistol. It’s also a practical solution for those who want a single handgun platform capable of firing two different calibers for range, competition, or home defense scenarios.

Specifications

• Caliber: 9mm Luger (Converts from .40 S&W)
• Material: 416R Stainless Steel
• Thread Pitch: 1/2″ x 28 TPI
• Compatibility: Glock 23, Generations 1 through 4
• Finish: Matte Stainless

FAQ

Do I need to change any other parts to convert my Glock 23 to 9mm?
For reliable function, we recommend also using a 9mm magazine and a 9mm extractor, though many users report success with just the barrel and magazine swap. The ejector in your .40 S&W slide may work, but a 9mm ejector (part #30274) is suggested for optimal reliability.

Will this barrel fit in my Glock 23 Gen 5?
No. This conversion barrel is specifically engineered for the Glock 23 Gen 1 through Gen 4. The locking block and barrel lug geometry changed with the Gen 5, requiring a different barrel.