Sig Sauer P320 XSeries XFULL 9mm with ROMEO-X PRO, Public Safety/LE Program, 4.7 in Barrel, 3x 17-Round Magazines
This P320 XSeries XFULL is a Public Safety/LE program configuration made available as surplus to the civilian market. It ships in as-new condition with a factory-installed SIG Sauer ROMEO-X PRO red-dot optic, a 4.7 in non-threaded barrel, and the XSeries full-size grip module. The W-prefix SKU (W320F-9-BXR3-PRO-RXX) and case label dated 28-Oct-2024 document this package.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Specific Condition Notes: Appears unused beyond factory test and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- Optic: SIG Sauer ROMEO-X PRO red-dot sight (installed)
- Case: SIG Sauer factory hard case (gray)
- Paperwork: SIG Sauer P320 operator manual and ROMEO-X PRO manual
- Magazines: 3x 17-round SIG Sauer factory steel magazines
- Lock: Cable lock
This pistol was issued for Law Enforcement personnel, and this surplus model has been made available to the civilian market. The configuration reflects the Public Safety/LE program build with a W-prefix SKU and a case label dated 28-Oct-2024. It is marked NEWINGTON, NH, USA and retains the modular stainless-steel fire control unit architecture with no external manual safety.
The XSeries XFULL format delivers a full-size 4.7 in barrel and a black polymer XSeries grip module featuring aggressive texture, an extended beavertail, and an undercut trigger guard. Controls include ambidextrous slide catch levers and a reversible magazine release. The flat-faced trigger and striker-fired action provide the familiar P320 fire control in the XSeries layout. Capacity is 17+1, and three factory steel magazines are included.
The stainless-steel slide wears a Nitron finish and has front and rear serrations. Sighting is set up for the included optic: the ROMEO-X PRO red-dot mounts with a rear sight notch integrated into the optic body, while the XRAY3 day/night tritium front sight with a green high-visibility ring is retained for co-witness.
A full-length M1913 accessory rail with four slots is machined into the dust cover for mounting compatible accessories. Overall dimensions are approximately 8.0 in L × 1.4 in W × 6.4 in H, with a listed weight around 30 oz. Chambering is 9mm Luger, and the barrel is non-threaded.




