Ballistic Advantage Premium Series Barrel Features The Ballistic Advantage Premium Series Barrel is machined from hardened 416R stainless steel a material selected for its strength toughness and good ductility across demanding use. A QPQ treatment improves surface hardness and wear resistance before a copper PVD coating is applied on top giving the barrel outstanding protection against the elements along with a striking distinctive finish. Spiral fluting reduces weight along the barrel s length while adding a visual signature that sets this barrel apart from a standard factory profile. Every barrel is honed lapped and tumbled during manufacturing to eliminate imperfections meaning the barrel is ready for flawless performance straight out of the box with no break in period required. Built with a 1:10 twist rate this 4.5 inch barrel is threaded 1/2x28 and includes a standard thread protector giving the shooter a direct path to adding a suppressor or compensator down the line. Ballistic Advantage holds every barrel to less than .0001 inch deviation of the bore a tolerance better than factory specification that supports more consistent accuracy shot after shot. Designed specifically to fit the Glock 19 Gen 3 through Gen 5 pistols this barrel is a direct drop in replacement for shooters looking to upgrade their factory barrel. For Glock 19 owners who want improved corrosion resistance a threaded muzzle and a distinctive finish the Ballistic Advantage Premium Series Barrel delivers a precision built upgrade. Ballistic Advantage Premium Series Barrel Specifications Manufacturer: Ballistic Advantage Model: Premium Series Barrel Compatible Hosts: Glock 19 Gen 3-5 Caliber: 9mm Barrel Length: 4.5 Color: Copper Finish: Copper PVD over QPQ Material: 416R Stainless Steel Barrel Description: Spiral Fluted Threaded Twist Rate: 1:10 Sights: None Muzzle: Thread Protector Weight: 3.2 oz Available At: GrabAGun