Experience the convenience of using a slide-mounted reflex sight without the need for suppressor height iron sights. The factory-installed Romeo-X Pro optic is positioned extremely low to the slide, allowing for a co-witness with the included standard height iron sights. This ensures a consistent and familiar sight picture. This factory replacement, P320 RXP X series stainless steel slide assembly is compatible with compact size (X series and non-X series) grip modules and is designed to accommodate our 3.6 inches barrel (barrel not included).