The Silencer Co Threaded Barrel for Glock 19 is crafted for 9mm caliber firearms and features a 4.5-inch length with a 1/2x28 thread pattern. This barrel allows for the attachment of a suppressor or muzzle device.Key FeaturesBarrel Length: Measures 4.5 inches, providing a balance between compactness and performance.Thread Pattern: Includes a 1/2x28 thread pattern for compatibility with various suppressors and muzzle devices.Color: Finished in black for a sleek appearance.Rate of Twist: Features a 1:10" right hand twist for effective stabilization of projectiles.