Sig Sauer P320 X M18 U.S. Military ModelOptic-Ready Coyote PVD Slide with Removable Night Sight Plate Compatible withRomeo1PRO and Deltapoint PRO OpticsCarry Length Coyote Grip ModuleAmbidextrous Manual SafetyStriker Fired with a Short Tactile Reset(1) 17rd & (2) 21rd Steel Magazines