This 9mm threaded conversion barrel drops into a Glock 23 Gen 3 slide and converts the pistol from .40 S&W to 9mm Luger using a 9mm magazine. The 1/2x28 threaded muzzle accepts common 9mm compensators, thread protectors, and suppressors built to that pitch.
Machined from 4150 chrome moly vanadium steel and finished in black nitride for hardness, corrosion resistance, and a matte look that pairs cleanly with stock or aftermarket Glock 23 Gen 3 slides. Chamber and bore are cut to 9mm spec — pair this barrel with quality 9mm range or defensive ammunition and a 9mm magazine in your existing Glock 23 frame.
Use a Glock 19 or other Glock 9mm magazine in your Glock 23 frame to feed 9mm reliably. Lightly oil the exterior and feed ramp before your first range trip and run 50–100 rounds to break the barrel in with your slide and recoil spring. Verify generation, slide, and magazine compatibility before installation — this barrel is configured for Gen 3 only.
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