Zaffiri Precision Barrel Features The Zaffiri Precision Black Nitride Barrel is machined from stainless steel to tight match grade tolerances delivering a measurable accuracy improvement over a factory Glock 17 barrel. Designed to work with lead plated and jacketed ammunition alike the barrel gives shooters flexibility in their choice of practice and defensive loads without needing to source special low-friction ammunition. The Black Nitride finish adds a hardened surface layer that improves wear resistance and reduces friction during cycling all while resisting corrosion from moisture and handling. A 1:10 twist rate properly stabilizes the range of 9mm bullet weights typically fired through a Glock 17. Threaded 1/2x28 the barrel accepts standard muzzle devices and includes a thread protector to keep the threads clean and protected when no device is attached. Built as a straightforward drop-in replacement for the Glock 17 Gen3 installation does not require gunsmithing or special fitting tools. At only 6 ounces the barrel adds minimal weight to the pistol while delivering a meaningful upgrade in both accuracy and durability. For Glock 17 Gen3 owners looking to improve precision and add threading capability to their pistol the Zaffiri Precision Black Nitride Barrel is a well-made option. Zaffiri Precision Barrel Specifications Manufacturer: Zaffiri Precision Model: Barrel Compatible Hosts: Glock 17 Gen3 Barrel Finish: Black Nitride Material: Stainless Steel Twist Rate: 1:10 Thread Pattern: 1/2x28 Barrel Length: 4.99 Includes: Thread Protector Weight: 6 oz Caliber: 9mm Available At: GrabAGun