In the competitive 9mm polymer-frame striker-fired pistol market, the RXM sets itself apart. The RXM offers maximum flexibility and customization via a removable stainless steel Fire Control Insert (FCI) set inside an interchangeable Magpul Enhanced Handgun Grip (EHG). As part of their ongoing collaboration, Ruger and Magpul will be offering a variety of grip frames so that consumers can customize their pistol to meet shifting tastes and needs. Specifications and Features: Brand: Ruger Model/Series: RXM Caliber: 9mm Luger Action: Semi-Auto Capacity: 15 Barrel Length: 4.5" Threaded Barrel: Yes Thread Pattern: 1/2 x 28 Barrel Material: Alloy Steel Twist Rate: 1:10" RH Barrel Finish: Black FNC Nitride Front Sight: Tritium, Co-Witness Height Rear Sight: Steel Drift Adjustable Grip Frame: FDE Magpul Enhanced Handgun Grip Overall Length: 7.65" Weight: 23.6 oz