$299.99
The Threaded Barrel G21 Gen4 & Gen3 Only RH fits Glock G21 Gen3 and Gen4 .45 Auto pistols, featuring .578 x 28 RH SAE threading and a metal thread protector. Built for accuracy, durability, and suppressor compatibility — a must-have for anyone looking for top-quality threaded barrels for sale.
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Description
Threaded Barrel G21 Gen4 & Gen3 Only RH — Built for Power, Precision, and Performance
Enhance your Glock’s performance with the Threaded Barrel G21 Gen4 & Gen3 Only RH, a professional-grade upgrade designed for shooters who demand accuracy, durability, and tactical versatility. This premium barrel fits Glock G21 Gen3 and Gen4 pistols chambered in .45 Auto, featuring a .578 x 28 RH SAE thread pattern — the American standard for .45 caliber suppressors and compensators. If you’re searching for top-quality threaded barrels for sale, this model stands out as the perfect balance between craftsmanship, reliability, and shooting excellence. (Excludes Gen5 models.)
Precision-machined from high-strength steel and polished to a smooth, corrosion-resistant finish, the Threaded Barrel G21 Gen4 & Gen3 Only RH ensures flawless alignment and consistent performance under the most demanding conditions. Its enhanced rifling delivers superior bullet stability, tighter groupings, and improved shot control — all while maintaining Glock’s legendary reliability. Designed to function seamlessly with or without a suppressor, this barrel provides the flexibility you need for both tactical and range applications.
Each barrel includes a metal thread protector, safeguarding your threading from impact, dirt, and wear when a muzzle device is not attached. The protector threads on smoothly and locks securely, preserving your barrel’s precision machining over time. Easy to install with no gunsmithing required, this upgrade instantly elevates your firearm’s performance, feel, and appearance.
Whether you’re fine-tuning a duty weapon, building a competition setup, or enhancing your everyday carry, this threaded barrel delivers proven results. For those seeking reliable threaded barrels for sale, the Threaded Barrel G21 Gen4 & Gen3 Only RH is an investment in accuracy, power, and long-term performance.
Key Benefits & Features:
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Enhanced accuracy and recoil control (Benefit) — Precision-cut rifling ensures tighter groupings and improved shot consistency (Feature: CNC-machined bore with match-grade tolerances).
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Suppressor and muzzle device compatibility (Benefit) — Standard .578 x 28 RH SAE threading fits most .45 Auto muzzle accessories (Feature: smooth threading for perfect suppressor alignment).
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Durability and long-term protection (Benefit) — Comes with a robust metal thread protector to maintain thread integrity and resist corrosion (Feature: corrosion-resistant coating for extended barrel life).
Fits: Glock G21 Gen3 and Gen4 (.45 Auto)
Thread: .578 x 28 RH SAE
Includes: Threaded Barrel + Metal Thread Protector
Excludes: Glock Gen5
The Threaded Barrel G21 Gen4 & Gen3 Only RH combines engineering precision with tactical strength, giving Glock owners a reliable performance edge. Designed for accuracy, built for endurance, and ready for customization — it’s the perfect addition for shooters searching for premium threaded barrels for sale that deliver results every time.








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