Matrix Arms Fluted Threaded Pistol Barrel MX19/Glock 19 Gen 1-4 4.452 in 1-16 Twist 1/2x28 Black. Matrix Arms barrels are known for holding unparalleled tight tolerances and have been a key to victory throughout the competition circuit over the last 5 years. Recently hitting the self-branded stage the MX19 Glock 19 barrel comes standard on the Matrix Arms all aluminum MX19 handgun or can be purchased separately to upgrade your Glock of choice. Combining unmatched precision aerospace machining with extreme research and development Matrix Arms has delivered the premier barrel of choice for all competition and defense applications. Specifications for Matrix Arms Glock 19 Fluted Threaded Pistol Barrel: Manufacturer: Matrix Arms Color: Black Barrel Length: 4.452 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-16 Flutes: Diamond Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 19 Gen 1 Glock 19 Gen 2 Glock 19 Gen 4 Glock 19 Gen 3 Model Generation: 3 Weight: 1 lb Included Accessories: None Package Contents: Matrix Arms Glock 19 Fluted Threaded Pistol Barrel What firearm models does the manufacturer say Matrix Arms Glock 19 Fluted Threaded Pistol Barrel is compatible with? The manufacturer says that Matrix Arms Glock 19 Fluted Threaded Pistol Barrel is compatible with Glock 19 Gen 3 Glock 19 Gen 4 Glock 19 Gen 2 Glock 19 Gen 1Matrix Arms B19G3TDB: Fluted Threaded Pistol Barrel MX19/Glock 19 Gen 1-4 4.452 in 1-16 Twist 1/2x28 Black