Glock 21 GEN1/4 Threaded Barrel Thread Pattern .578"x28

The Glock OEM Threaded Barrel for Glock 21 is a genuine factory replacement barrel chambered in .45 ACP. Designed for compatible Glock 21 Gen 3 and Gen 4 pistols, this factory barrel features a .578x28 RH thread pattern and includes a metal thread protector.

Manufactured to Glock factory specifications, 47740 is ideal for maintenance, repair, or replacement of a worn or damaged Glock 21 barrel while adding threaded-barrel capability for compatible muzzle devices where legal. This OEM barrel is built for proper Glock fit, function, and reliability.

This listing is for the threaded barrel and thread protector only. Slide, recoil spring assembly, frame, firearm, magazines, ammunition, muzzle devices, and other parts are sold separately unless otherwise stated.

Features:

• Genuine Glock OEM threaded barrel
• Factory Glock part number 47740
• Designed for Glock 21 pistols
• Fits compatible Glock 21 Gen 3 and Gen 4 pistols
• Chambered in .45 ACP
• .578x28 RH thread pattern
• Includes metal thread protector
• Black factory finish
• Ideal for maintenance, repair, replacement, or threaded-barrel upgrade
• Barrel and thread protector only; firearm and other parts sold separately

Specifications:

• Brand: Glock
  
• Model: Glock 21 OEM Threaded Barrel
  
• MPN: 47740
  
• SKU: Glock-47740
  
• UPC: 764503030611
  
• Product Type: Pistol Barrel
  
• Platform: Glock
  
• Fit: Glock 21
  
• Generation Compatibility: Gen 3/4 / Verify Fit
  
• Caliber: .45 ACP
  
• Threaded Barrel: Yes
  
• Thread Pattern: .578x28 RH
  
• Thread Protector: Included
  
• Finish: Black
  
• Condition: New
  
• Included: Threaded Barrel and Thread Protector Only

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.