Using exceptionally high-grade material and precision machining every feature in one proprietary process, our barrels deliver unparalleled accuracy and performance. Every barrel is machined with an 11 target crown for greater accuracy and coated with high quality finishes, ensuring the most accurate, reliable barrels available on the market today. These are our Mod 2 barrels made to pair perfectly with our Glock Compensator. All of the Threaded versions come with our original Gen 1 thread protector in Black Nitride. made in specialized factories Specifications for Killer Innovations Velocity Glock 19 Threaded Barrel: Manufacturer: Killer Innovations Fabric/Material: 416R Stainless Steel Barrel Length: 4.5 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 19X, Glock 19 Model Generation: 5, 4, 3 Weight: 3.29 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 19 Threaded Barrel Compatible with: Glock 19 / Gen 3,4 & 5 / Glock 19X Chamber: 9mm Luger Twist rate: 1:10 Rifling: Single Point Cut with SPT Technology Weight: 3.29 oz W/O thread protector Length: 4.5 O.A.L. W/O thread protector Finishes: TiN (Gold), MDC (Gray) or Black Nitride Coated Threads: -28 Thread Protector Finish: Black Nitride Thread Protector weight: .16 oz High-temp rubber O-Ring included made in specialized factories Package Contents: Killer Innovations Velocity Glock 19 Threaded Barrel Thread Protector o-ring This product is compatible with the following gun models: Glock 19, Glock 19X