Overview
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
