21 Match 45ACP Barrel with 5/8×32 Thread 4-Port Compensator (Fits Glock G21 Gen 1-4)

All KKM barrels are made using certified 416R gun-barrel quality stainless steel bar stock. Our barrels are then heat treated and vacuum tempered to 42 RC. All of our barrels are CNC machined to obtain superior dimensional tolerances over stock. Our advanced proprietary button rifling process allows KKM barrels to offer greater accuracy over stock barrels. Our Glock barrels come with fully supported SAAMI spec match chambers for shooting factory or reloaded ammunition as well as lead or jacketed bullets. *Unless noted all barrels are drop-in fit.

OAL threaded barrel length is 4.995″

Compensator Finish Type:  Black type 3 hard coat anodized aluminum – Compensator is 1.25″ long.

Compensators are attached by two set screws. The screws and wrench are provided. We recommend blue Loctite on these set screws but do not get Loctite on your barrel threads. 

DISCLAIMER:  This product is not manufactured, authorized, endorsed, or warranted by GLOCK.  GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.