9 Inch Glock 21 (Gen 3, SF, 4) Threaded Barrel

9" Extended Threaded Barrel for Glock 20 (Gen 3, SF, Gen 4)

Maximize the ballistic potential of your 10mm powerhouse.

Turn your standard large-frame sidearm into a high-velocity, precision instrument. This 9-inch extended barrel is explicitly engineered for the Glock 20 (Gen 3, SF, and Gen 4) to fully leverage the raw power of the 10mm Auto cartridge. By significantly increasing the burn time in the bore, this barrel offers superior muzzle velocity, flattened trajectories, and enhanced stability.

Built to endure the intense pressures of full-power 10mm loads, the barrel is precision-machined from performance-grade steel. It is finished with a tough black nitride coating, creating a hardened shield against corrosion, thermal stress, and the wear associated with heavy hunting or range use.

Core Performance Features

• Heavy-Duty Threading: Machined with industry-standard 9/16-24 TPI threading, allowing for the secure attachment of suppressors, aggressive muzzle brakes, or flash hiders designed for .40/10mm calibers.
• High-Reliability Feed Ramps: The feed geometry is polished and contoured to minimize friction, ensuring consistent cycling of various ammunition types—from heavy hard-cast hunting loads to defensive hollow points.
• Match-Grade Lockup: Manufactured to strict tolerances to ensure a tight, precise fit between the barrel and slide, improving mechanical accuracy and shot-to-shot consistency.
• Aggressive Styling: The extended length and sleek profile, combined with precision laser markings, provide a custom look that stands out on any large-frame build.

Ideal Applications

This extended barrel is the ultimate upgrade for:

• Carbine Chassis Systems: The added length is essential for utilizing chassis platforms (such as the MCK or Recover Tactical), effectively converting your G20 into a compact carbine.
• Large Frame Polymer80 Builds: The perfect centerpiece for PF45 custom projects.
• Hunting & Woods Defense: The 9-inch rifling boosts muzzle velocity, ensuring maximum energy transfer and terminal performance for hunting or long-range steel shooting.

Compatibility Note: This barrel is exclusively designed for the Glock 20 (Gen 3, SF, and Gen 4) and compatible large-frame equivalents. It is NOT compatible with the Glock 21, Glock 29, or standard frame 9mm/.40 models (G17/G19/G22).