Killer Innovations Velocity Glock 17 Threaded Barrel MDC Gray G17THD1GRY. Killer Innovations built these Pistol Barrels from exceptionally high-grade bar stock and they are MDC (Gold) or Black Nitride coated for enhanced performance and longevity in the field. The Killer Innovations Velocity 9mm Barrel offers a single point cut with their proprietary SPT (Single Point Tread) technology which greatly increases the accuracy of your handgun with every shot. Upgrade your weapon with a Killer Innovations Thread Protector Glock 17 9mm Barrel to get a tougher structure for your pistol that will deliver unwavering performance in the field. Specifications for Killer Innovations Velocity Glock 17 Threaded Barrel: Manufacturer: Killer Innovations Barrel Length: 4.973 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Caliber: 9mm Luger Barrel Material: 416R Stainless Steel Gun Make: Glock Gun Model: Glock 17 Weight: 3.8 oz Included Accessories: High-Temp Rubber O-Ring Included Condition: New Rifling Profile: Single Point Cut with SPT Technology Features of Killer Innovations Velocity Glock 17 Threaded Barrel Compatible With: Glock 17 / Gen 3 & 4 Chamber: 9MM Luger Twist Rate: 1:10 Rifling: Single Point Cut with "SPT" Technology Weight: 3.8 oz W/O Thread Protector Length: 4.973" O.A.L. W/O Thread Protector Finishes: TiN (Gold) MDC (Gray) or Black Nitride Coated Threads: 1/2-28 Thread Protector Finish: Black Nitride Thread Protector Weight: .16 oz High-Temp Rubber O-Ring Included Package Contents: Killer Innovations Velocity Glock 17 Threaded Barrel Thread Protector o-ring What firearm models does the manufacturer say Killer Innovations Velocity Glock 17 Threaded Barrel is compatible with? The manufacturer says that Killer Innovations Velocity Glock 17 Threaded Barrel is compatible with Glock 17Killer Innovations G17THD1GRY: Velocity Glock 17 Threaded Barrel MDC Gray