The Rosco Manufacturings line of Glock barrels are a drop-in, match grade option that enhances the accuracy and performance of any stock Glock pistol. All Bloodline Glock barrels are made from 416R stainless steel, broached, honed, polished, and then melonited.All barrels have also been designed with strategic beveled edges surrounding the chamber area to reduce premature wear/ tear commonly found on basic aftermarket barrels. The result is a duty capable upgrade that will not sacrifice quality.