Faxon Firearms Duty Series Barrel Features The Faxon Firearms Duty Series Barrel is machined entirely in house from stress relieved 4150 CMV steel a chromoly steel chosen for its strength and resistance to fatigue under repeated firing. The 11 degree target crown is cut to protect the rifling at the muzzle and promote consistent bullet release for improved accuracy. Conventional rifling rather than polygonal broadens ammunition compatibility by allowing cast and coated lead bullets to be run safely alongside standard jacketed rounds. The 1:10 twist rate is matched to common 9mm bullet weights for stable accurate flight downrange. A black salt bath nitride finish is applied to both the interior and exterior of the barrel increasing lubricity for smoother cycling while improving wear resistance and barrel life over a standard factory finish. The barrel is built as a true drop in fit for Glock 19 Gen 2 through Gen 5 slides requiring no gunsmithing or fitting work to install. Faxon s better than factory tolerances deliver a tighter more consistent lockup than the original equipment barrel which can translate into a noticeable accuracy improvement. The Faxon Firearms Duty Series Barrel is available for sale at GrabAGun for Glock 19 owners looking to upgrade their pistol s accuracy and durability. Faxon Firearms Duty Series Barrel Specifications Manufacturer: Faxon Firearms Model: Duty Series Caliber: 9mm Compatible Hosts: Glock 19 Gen 2-5 Color: Black Finish: Salt Bath Nitride Barrel Length: 4.02 Twist Rate: 1:10 Material: 4150 CMV Steel Threaded: No Available At: GrabAGun