This Sig Sauer Slide Assembly is a factory replacement slide for the P320. 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 so you can enjoy co-witness with the included standard height iron sights, giving you a consistent, familiar sight picture. Factory replacement slide for the P320. This is a complete slide assembly, including all internal slide parts, and front and rear XRAY3 Day/Night sights. Barrels and recoil spring assemblies are sold separately. FeaturesDurable Nitron finished stainless steel slideSlide-mounted ROMEO-X Pro reflex sightStandard height XRAY3 Day/Night sights providing co-witnessTwo Port Slide Integrated Expansion ChamberStandard forward cocking serrations