SIG SAUER P320-XFULL 9mm Pistol with ROMEO-RS PRO

SIG SAUER P320-XFULL with ROMEO-RS PRO

The SIG SAUER P320-XFULL combines a full-size X-Series pistol with a factory-installed ROMEO-RS PRO reflex sight. Manufacturer part 320XF-9-BXR3P-RS identifies this 9mm configuration with a 4.7-inch barrel, XRAY3 day/night sights and two 17-round steel magazines. The exact UPC is 798681719952. This is an optic-equipped package, not an iron-sight-only or merely optic-ready XFULL model.

Full-size X-Series platform

The 4.7-inch carbon-steel barrel and full-length stainless-steel slide provide the dimensions expected from a full-size P320. SIG SAUER lists this model at 8.2 inches long, 1.3 inches wide and 5.9 inches high, with a weight of 28.7 ounces including a magazine. The barrel is non-threaded, and the slide carries SIG SAUER’s black Nitron finish.

A medium X Full-Size polymer grip module supports the pistol’s full-size layout. Its extended beavertail and deep trigger-guard undercut are designed to promote a high, consistent grip. The grip is compatible with optional X-Series components, while an M1913 accessory rail allows installation of an appropriately sized light or other compatible rail accessory. Those optional items are not included.

Factory-installed ROMEO-RS PRO

SIG SAUER lists the ROMEO-RS PRO as installed on this exact SKU, paired with XRAY3 day/night sights. This makes the pistol ready to use with its factory reflex sight without requiring a separate optic purchase. The slide uses the PRO footprint, an important detail when comparing it with SIG-LOC, compact-footprint or other P320 optic configurations.

The XRAY3 sights provide the factory mechanical sighting arrangement alongside the optic. Owners should read the ROMEO-RS PRO manual before use and verify its controls, battery procedure, brightness settings and adjustment method rather than relying on information for a differently named ROMEO model. If the sight is ever removed or replaced, follow the manufacturer’s mounting and torque guidance.

Trigger, magazines and handling

The P320-XFULL is striker fired and uses an X-Series flat trigger. SIG SAUER lists no manual safety on this variant. Safe storage and a correctly fitted holster that fully protects the trigger are essential. A holster should also be made for the full-size 4.7-inch slide and provide clearance for the installed ROMEO-RS PRO and any rail accessory actually in use.

The package includes two 17-round steel magazines. Similar XFULL listings can be supplied with 10-round magazines or a different optic, so the full manufacturer part number should be checked before ordering. Magazine-capacity and transfer rules differ by jurisdiction; confirm that this exact configuration can be transferred in the buyer’s location.

Key specifications

• Manufacturer part number: 320XF-9-BXR3P-RS.
• UPC: 798681719952.
• Caliber and action: 9mm Luger, striker fired.
• Barrel: 4.7-inch carbon steel, non-threaded.
• Slide: Nitron-finished stainless steel.
• Optic: factory-installed ROMEO-RS PRO.
• Sights: XRAY3 day/night sights.
• Grip: black medium X Full-Size polymer grip module.
• Trigger: X-Series flat trigger.
• Magazines: two 17-round steel magazines.
• Accessory rail: M1913.
• Manufacturer-listed dimensions: 8.2 inches long, 1.3 inches wide and 5.9 inches high; 28.7 ounces with magazine.

Choosing the correct XFULL package

P320-XFULL models can look nearly identical while using different optics, mounting footprints, magazine capacities or sight packages. The -RS suffix and complete MPN identify this ROMEO-RS PRO configuration. Compare the full part number rather than relying on a shortened product title, especially when shopping for holsters, spare magazines, replacement optics or mounting hardware.

This listing includes the pistol, installed ROMEO-RS PRO, factory sights and two listed magazines. It does not include ammunition, a holster, rail-mounted light or other accessories unless separately stated. Review both the P320 and optic manuals, follow all applicable safe-handling practices and secure the firearm against unauthorized access.