Rosco Bloodline Barrel Features The Rosco Manufacturing Bloodline barrel is machined from 416R stainless steel a steel prized in precision barrel making for its machinability and corrosion resistance compared to standard carbon steels. Every Bloodline barrel is broached honed and polished as part of its manufacturing process steps that Rosco uses to tighten tolerances and improve accuracy over a typical factory barrel. After machining the barrel receives a melonite finish a nitride based process that hardens the surface of the steel and leaves it with the durable Nitride Black appearance this barrel ships in. A 1:10 twist rate matches Glock s own factory specification ensuring the barrel stabilizes standard 9mm projectiles exactly as the factory barrel does. Designed specifically to fit Glock 43 and 43X pistols the Bloodline barrel is a simple user friendly swap that Rosco still recommends a local gunsmith review if the installer has any questions about proper fitment. The barrel is rated for use with SAAMI approved factory new ammunition keeping pressures within the range the barrel was designed and tested around. As a drop in match grade option the Bloodline barrel is built to enhance the accuracy and overall performance of an otherwise stock Glock pistol without requiring other parts changes. The Rosco Manufacturing Bloodline barrel in Nitride Black is a straightforward performance upgrade for sale at GrabAGun suited to Glock 43X owners looking for a precision aftermarket barrel. Rosco Bloodline Barrel Specifications Manufacturer: Rosco Model: Bloodline Type: Barrel Caliber: 9mm Compatible Hosts: Glock 43/43X Barrel Length: 3.4 Barrel Material: 416R Stainless Steel Twist Rate: 1:10 Finish: Melonite Color: Black Available At: GrabAGun