Drop-in 9mm threaded barrel for Glock 17 Gen 1-4 pistols. Manufactured by True Precision in Georgia from US-made materials and finished in Black Nitride for corrosion resistance and reduced wear. Will not fit Glock 17 Gen 5 — verify your slide generation before purchase.

Specs:

• Caliber: 9mm Luger
• Pistol fit: Glock 17 Gen 1, 2, 3, 4 (also fits Polymer 80 PF940V2 builds running Gen 3 slides)
• Threading: 1/2x28, left-hand twist
• Rifling: 1:10 LH, 6 groove broach cut (cast lead, FMJ, JHP all safe)
• Finish: Black Nitride
• Includes thread protector

1/2x28 is the standard pitch for 9mm compensators (including the 3CR Tactical 9mm Micro Compensator) and most 9mm suppressors. Drop-in installation with no fitting required on a stock Gen 3 G17 slide. Run 100-150 rounds of FMJ before installing a comp or suppressor to confirm headspace and fit. Broach-cut rifling is rated for cast lead, so reloaders running unjacketed bullets can use this barrel without bore-fouling concerns.

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