Glock 17 Barrel Features Machined from steel the Glock 17 Barrel in 9mm carries a 1:10 twist rate that matches factory ballistic performance ensuring accuracy stays consistent after installation. At 4.5 inches it is a direct fit replacement designed specifically for the Glock 17 platform requiring no aftermarket fitting or modification. The black finish matches the factory appearance so the pistol looks and performs the way it did from the factory. For Glock 17 owners dealing with a worn bore or simply wanting a factory spare on hand this barrel offers a straightforward reliable replacement option. For shooters who want to keep their Glock 17 running at factory spec this barrel is available for sale at GrabAGun. Glock 17 Barrel Specifications Brand: Glock Fits: Glock 17 Caliber: 9mm Luger Barrel Length: 4.5 Barrel Material: Steel Twist Rate: 1:10 Color: Black Available At: GrabAGun