The Sig Sauer P320 Carry/Compact 9mm Luger 3.9″ Slide Assembly comes factory-equipped with a ROMEO-X PRO optic, XRAY3 Day/Night sights, and a durable Cerakote finish. The ROMEO-X PRO is positioned at an incredibly low height on the slide, enabling co-witness with the included standard height iron sights for a consistent sight picture. This factory replacement slide assembly is compatible with P320 Compact (Non X-Series) and Full Size/Carry (X-Series and Non X-Series) grip modules, and will accommodate Standard 9mm 3.9″ non-threaded or 4.6″ threaded barrels (not included).
The ROMEO-X PRO offers reticle options in Circle Dot, 3 MOA, and 6 MOA configurations. This military-grade optic features a 7075 aluminum housing, side-loading CR1632 battery for convenient replacement without re-zeroing, and MOTAC™ motion activation providing 20,000 hours of runtime. The low deck height delivers absolute co-witness with standard iron sights. Designed, tested, and assembled in the USA, the ROMEO-X includes direct mounting footprints for optics-ready pistols.
This slide is chambered for 9mm Luger barrels only and is not compatible with .40, .357, or .45. This is a slide assembly only—barrel and recoil assembly are not included. It is an excellent choice for shooters building or upgrading a modular P320 platform with professional-grade optics and sights.
