The Glock Threaded Barrel for Glock Model 44 is specifically designed for the Glock 44 model, chambered in .22 LR. This factory replacement barrel features a length of 4.02 inches and includes M9 X 75 RH threading, along with a 500-28 adapter and a metal thread protector.Key FeaturesIncluded Components: Comes with a 500-28 adapter and metal thread protector.Thread Specifications: M9 X 75 RH thread pattern for compatibility with various muzzle devices.Factory Replacement: This barrel is a direct replacement for the Glock 44 factory barrel.