Faxon Firearms Duty Series Barrel Features The Faxon Firearms Duty Series Barrel is machined from steel and finished in black nitride built as a drop in replacement for Glock 22 Gen 2 through Gen 4 pistols chambered in 9mm Luger. Faxon holds tight dimensional tolerances on its Duty Series barrels which helps improve accuracy and consistency compared to many factory barrels while still functioning reliably with a wide range of 9mm ammunition. The 1 in 10 inch twist rate is well suited to the common bullet weights used in 9mm defensive and duty loads stabilizing them properly through the bore. Black nitride finishing adds corrosion resistance and a hard low friction bore surface that holds up to high round counts. The barrel ships threaded with a thread protector installed to keep the muzzle threads clean and protected until the shooter is ready to add a compensator or suppressor. Because it is built specifically for the Glock 22 platform in Gen 2 through Gen 4 configurations the barrel drops directly into a compatible slide without requiring fitting work. This makes it a straightforward way to convert a 22 caliber Glock 22 to run 9mm Luger provided the shooter uses a correctly sized magazine conversion as well or simply to upgrade to a threaded nitride finished barrel. For shooters looking to add thread capability and a precision machined bore to their Glock 22 the Duty Series Barrel is a direct well made option. Faxon Firearms Duty Series Barrel Specifications Manufacturer: Faxon Firearms Model: Duty Series Caliber: 9mm Compatible Hosts: Glock 22 Gen2-4 Barrel Finish: Black Nitride Barrel Material: Steel Barrel Type: Drop In Barrel Description: Threaded Twist Rate: 1:10 Thread Pattern: 1/2x28 Muzzle: Thread Protector Barrel Length: 4.02 Available At: GrabAGun