Experience the convenience of using a slide-mounted reflex sight without requiring suppressor height iron sights. The factory-installed Romeo-X Pro optic is positioned exceptionally low on the slide, allowing for a co-witness with the included standard height iron sights. This setup ensures a consistent and familiar sight picture. This factory replacement, P320 RXP X series stainless steel slide assembly is compatible with Full, Carry and Compact size (X series and non-X series) grip modules and is designed to accommodate our 4.7 inches barrel (barrel not included).