KKM Threaded barrel .578X28 For G21

(1 review)
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All KKM barrels are made using certified 416R gun-barrel quality stainless steel bar stock. These 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. Because of our advanced proprietary button rifling process, all KKM barrels offer greater accuracy over stock barrels. Our Glock barrels come with fully supported SAAMI spec. match chambers for shooting factory or reloaded ammunition. Thread protector included. These are drop-in barrels, no fitting or machining required.


  • 5
    Threaded G21 Barrel

    Posted by Sam Frakes on 6th Jul 2022

    Amazing quality and accuracy! I am not a big fan of shiny parts, but a little Cerakote on the barrel and thread protector will fix that.