Threaded replacement barrel for the Glock 21 (.45 ACP) with M16x1 LH threads and a metal thread protector. Black steel construction and a 4.49 inch length for compact carry and compensator use.
This is an OEM Glock threaded replacement barrel intended for the Glock 21 in .45 ACP. It features M16x1 left-hand threads and ships with a metal thread protector. The barrel’s compact 4.49 inch length keeps overall slide length modest while allowing attachment of a compensator for recoil management.
Product Specifications
The manufacturer is Glock.
The model is G21.
The caliber is .45 ACP.
The barrel measures 4.49 inches in length.
The barrel type is Threaded.
The thread specification is M16x1 LH.
The finish is Black.
The barrel material is specified as Steel.
The product includes a metal thread protector.
The product type is listed as Barrel.
The cartridge is .45 ACP.
The UPC is 764503015564.
This threaded Glock G21 barrel is a practical choice for shooters who want a factory-compatible replacement that supports muzzle devices without substantially increasing slide length. It suits everyday carry setups where a compact threaded barrel is desired and can be used in competition or range applications when a compensator is fitted.
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