"The result of a collaboration between Ruger and Magpul, the Ruger RXM Semi-Auto Pistol with Threaded Barrel delivers standout performance with extensive customizability. Its removable stainless steel Fire Control Insert (FCI) sits inside an interchangeable Magpul Enhanced Handgun Grip (EHG), giving you tons of customization options for Gen 3 grip frames and other components (not included). In addition, the Enhanced Handgun Grip sports .75-scale TSP texturing for a secure and comfortable grip every time. The through-hardened alloy steel slide is cut for direct mounting of optics with the Trijicon RMR footprint, which allows you to co-witness with the front tritium steel sight and steel rear sight. Best of all, the RXM delivers a full-sized payload in a package that's just 1"" wide. This model features a threaded barrel with ½""x28 threads and thread protector. Cerakote slide finish provides superior corrosion resistance. Includes 2 magazines and hard plastic carry case. Removable stainless steel Fire Control Insert Interchangeable Magpul Enhanced Handgun Grip Striker-fired with a flat-faced trigger, smooth trigger pull, and tactile reset Just 1"" wide Compatible with most Gen 3 aftermarket parts, holsters, and accessories Optics-ready with Trijicon RMR footprint Threaded barrel Front tritium steel night sight and steel rear sight Cerakote slide finish Flared magazine well Extended magazine release and raised slide stop"