The Guardian barrel for the Glock. Our new match grade replacement barrel will take the accuracy of your Glock to the next level. This barrel has been pulled broached, SAAMI spec rifling and has a twist rate of 1/10. Made from 416R Stainless Steel. Being a match grade barrel, some minor fitting may be needed. This barrel has the caliber laser engraved on the back of the lock up on top to the barrel coupled with our name on the port side of the lock up. The bigger lock-up area gives you better shot to shot accuracy. Our threaded barrel has thread pitch of 1/2 x 28.