The Springfield Armory XD-M .45 ACP 4.5in Threaded Barrel is specifically designed for the XD-M series. This barrel measures 4.5 inches in length and features a 1-in-16" rate of twist. The threaded design accommodates suppressors and muzzle devices for enhanced versatility.Key FeaturesBarrel Length: The barrel has a length of 4.5 inches, providing a balance of maneuverability and accuracy.Rate of Twist: Features a 1-in-16" rate of twist for optimal bullet stabilization.