Enjoy using a slide-mounted reflex sight without needing suppressor height iron sights. The factory-installed ROMEO-X COMPACT optic sits incredibly low to the slide to enjoy co-witness with the included standard height iron sights, giving you a consistent, familiar sight picture. Factory replacement 3.1" 9MM slide for the P365X. Compatible with all P365 9mm models and configurations with the following accompanying items: P365/P365X 3.1" barrel, and recoil assembly.