Matrix Arms Pistol Barrel Glock 19 Gen 3 1-16 RH Twist Black. With a 1:16 twist these barrels are designed for improved performance and accuracy. Drop-in ready the Matrix Arms Glock barrel is the perfect upgrade to your 9mm build. Specifications for Matrix Arms Glock 19 Gen 3 Pistol Barrel: Manufacturer: Matrix Arms Color: Black Finish: DLC Fabric/Material: 416 Stainless Steel 416R Stainless Steel Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 19 Gen 3 Model Generation: 3 Barrel Material: 416R Stainless Steel Barrel Twist Rate: 1-16 Quantity: 1 Package Contents: Matrix Arms Glock 19 Gen 3 Pistol Barrel What firearm models does the manufacturer say Matrix Arms Glock 19 Gen 3 Pistol Barrel is compatible with? The manufacturer says that Matrix Arms Glock 19 Gen 3 Pistol Barrel is compatible with Glock 19 Gen 3Matrix Arms GB19G3: Pistol Barrel Glock 19 Gen 3 1-16 RH Twist Black