The SIG SAUER P320 XSeries Slide Assembly with ROMEO1PRO Red Dot (8900279) is a premium factory upgrade designed to transform your P320 into a modern, optics-equipped defensive or duty pistol. Engineered by SIG SAUER for seamless compatibility and reliable performance, this complete slide assembly combines enhanced sighting capability, rugged construction, and proven red dot technology in one ready-to-install package.

Built to accommodate 3.9-inch P320 barrels, this XSeries slide assembly is compatible with P320 Compact and Carry grip modules, offering a streamlined upgrade path without the need for custom gunsmithing. The slide comes factory-equipped with suppressor-height XRAY3 Day/Night sights, providing a clear co-witness sight picture and dependable visibility in both daylight and low-light conditions.

At the heart of the system is the factory-installed ROMEO1PRO micro red dot optic, one of SIG SAUER’s most trusted pistol-mounted optics. Featuring a rugged aluminum housing, crystal-clear lens, and SIG’s advanced MOTAC™ (Motion Activated Illumination) technology, the ROMEO1PRO automatically powers on when motion is detected and powers down when stationary, maximizing battery life while ensuring the optic is ready when needed.

Whether you're building a carry pistol, upgrading a duty sidearm, or improving your range setup, the P320 XSeries Slide Assembly delivers factory-level fit, performance, and reliability. With suppressor-height sights and a pre-mounted ROMEO1PRO optic, this complete assembly provides a fast and efficient path to an optics-ready P320 platform.

Note: Compatible with 9mm, .357 SIG, and .40 S&W P320 Carry and Compact configurations using 3.9" barrels. Not compatible with P320 .45 ACP models.