SIG Sauer P320 XSeries XFULL PRO 9mm Luger, LE Surplus, ROMEO-X Red Dot, 4.7 in Barrel, 3x 17-Rd Mags
This full-size P320 XSeries XFULL PRO is a law-enforcement issued pistol later released as surplus to the civilian market. It comes in as-new condition with a factory-installed SIG Sauer ROMEO-X red dot on the optic-cut slide, and includes three 17-round magazines. Built in the United States, it features the modular P320 fire control unit, a 4.7 in steel barrel, and XSeries ergonomics designed for confident, repeatable control.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This pistol appears unused beyond factory testing and routine handling.
What's Included
- SIG Sauer ROMEO-X open-reflex red dot sight with three-button controls (installed)
- SIG Sauer factory hard case (gray)
- Factory paperwork and manuals, including ROMEO-X documentation
- Three 17-round SIG Sauer factory steel magazines
Purpose-built as a duty-ready full-size, the XFULL PRO pairs the striker-fired P320 system with the XSeries grip module, adding a beavertail and an undercut trigger guard for a high, controlled purchase. The flat trigger offers a consistent press, and the left-side magazine release supports familiar service-pistol handling.
The slide is finished matte black with front and rear serrations for positive manipulation and is machined with a factory optic cut. Installed is SIG Sauer’s ROMEO-X open-reflex red dot featuring a red dot reticle, SIG logo branding, and three-button controls; the unit remains mounted on the factory slide cut with the battery warning tag attached. Iron sights are retained, with a dovetailed green front dot and a rear notch positioned behind the optic.
The P320’s modular fire control unit enables caliber and size swaps within the P320 family, giving this pistol flexibility beyond its current configuration. A 4.7 in steel barrel anchors the full-size system, and the MIL-STD-1913 accessory rail with four slots accepts compatible lights and accessories. Capacity is 17+1, and this example includes three factory 17-round magazines.
Manufactured in the United States, this XSeries model is finished in matte black over a durable polymer frame and textured XSeries grip. Documentation in the case is dated 23-OCT-2024, and the model code is W320F-9-BXR3-PRO-RXX, aligning with its XFULL PRO specification and recent production.
This pistol was issued for Law Enforcement personnel; this surplus model has been made available to the civilian market.