Silencerco Barrel Features The SilencerCo Barrel is machined from 416R stainless steel a material chosen for its strength and corrosion resistance under the repeated heat and pressure cycles of regular shooting. A black nitride finish coats the barrel adding a layer of durability against wear while giving it a clean factory-matching appearance on the Glock 17 Gen 5 slide. Cut to a 1:10 right-hand twist and finished at 5 inches in length the barrel maintains the accuracy and reliability shooters expect from a quality aftermarket barrel. A 1/2x28 thread pitch at the muzzle is the industry standard for 9mm giving the shooter broad compatibility with SilencerCo s own suppressor lineup as well as most other 9mm cans on the market. Because all pistol suppressors require a threaded barrel this upgrade is the first step for any Glock 17 Gen 5 owner planning to run a can on their duty or range gun. SilencerCo built its reputation on suppressor manufacturing and that same commitment to tight tolerances and tough materials carries over into this barrel. A thread protector is included with the barrel keeping the threads covered and protected when a suppressor is not mounted. For Glock 17 Gen 5 owners building out a suppressed pistol setup this SilencerCo barrel is a direct reliable path to get there for sale at GrabAGun. Silencerco Barrel Specifications Manufacturer: Silencerco Model: Barrel for Glock 17 Gen 5 Type: Pistol Barrel Caliber: 9mm Barrel Length: 5 Compatible Hosts: Glock 17 Gen 5 Color: Black Material: 416R Stainless Steel Finish: Nitride Thread Pattern: 1/2x28 Twist Rate: 1:10 RH Available At: GrabAGun