SIG Sauer P320 Full-Size PRO 9mm, Optics-Ready Slide, X-Series Grip, ROMEO-X Pro Red Dot, 4.7 in Barrel, LE Issue
This SIG Sauer P320 Full-Size PRO stands out as a law-enforcement–issued X-Series pistol made available as surplus for the civilian market. It pairs the 4.7 inch PRO configuration with a solid-top, optics-ready slide and an installed SIG Sauer ROMEO-X Pro red dot. The package includes XRAY3 day/night iron sights, a modular stainless-steel Fire Control Unit, and three 17-round magazines.
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 test firing and routine handling.
What’s Included
- SIG Sauer ROMEO-X Pro red dot optic (installed)
- SIG Sauer factory gray hard case with factory label
- SIG Sauer manuals and literature (P320 and ROMEO-X)
- Three 17-round factory SIG Sauer steel double-stack magazines
This full-size P320 PRO features SIG’s solid-top, optics-ready slide with front and rear serrations and a Nitron black finish. The 4.7 inch barrel, 17+1 capacity, and MIL-STD-1913 style four-slot accessory rail provide a duty-ready configuration in the X-Series lineup.
The installed SIG Sauer ROMEO-X Pro red dot uses the PRO/DPP footprint and a 7075-T6 aluminum housing. It has a side-load CR1632 battery and a selectable reticle with a 2-MOA dot or 32-MOA circle. Standard-height SIG XRAY3 day/night iron sights are also present.
The X-Series full-size grip module offers an extended beavertail, a high undercut, and aggressive texture, paired with a flat-faced trigger. The serialized stainless-steel Fire Control Unit underscores the P320’s modular design.
Markings include a slide marked "SIG SAUER P320," a barrel marked "9mm x 19," and a frame molded "NEWINGTON, NH, USA." The factory label shows code W320F-9-BXR3-PRO-RXX dated 23-OCT-2024. This pistol was issued for law enforcement personnel and later released to the civilian market.