This Genuine Ruger Factory Accessory is designed for Ruger RXM pistols originally equipped with a 4" non-threaded barrel. The factory-manufactured threaded alloy steel barrel features a durable black nitride finish for optimal fit, function, and longevity. It accepts standard 1/2"-28 (Class 2A) muzzle devices and installs quickly with no gunsmithing required. A thread protector and threaded barrel guide rod assembly are included. Note: Pistols with threaded barrels are restricted in some states and locales. Please verify all state and local laws prior to purchase. Product Features Genuine Ruger factory accessory Compatible with Ruger RXM pistols with 4" non-threaded barrels Threaded barrel accepts 1/2"-28 (Class 2A) muzzle devices Alloy steel construction with black nitride finish Drop-in installation with no gunsmithing required Includes thread protector and threaded barrel guide rod assembly Product Specifications Manufacturer: Ruger Family: RXM Series Model: RXM Threaded Barrel Kit Type: Accessory-Kits Item Group: Handgun Accessories Caliber/Gauge: 9mm Thread Pattern: 1/2x28 Special Feature: Threaded Barrel