SIG Sauer P320 XFIVE 9mm X-Series Full-Size, 5" Bull Match Barrel, Adjustable Sights, 6x 21-Round Mags
This SIG Sauer P320 XFIVE is a full-size, 9mm X-Series model built around a 5-inch carbon steel bull match barrel and a feature-rich slide with top lightening ports. It carries the X-Series flat-faced, skeletonized trigger and a polymer X-Series grip module with a removable flared magwell. The pistol includes Dawson-pattern iron sights with a green fiber-optic front and a fully adjustable rear. It comes as an early, non-Legion XFIVE configuration with six 21-round magazines and useful extras.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This pistol shows minimal markings from previous handling and use. The bore is bright and clean. Please refer to the photos for additional detail.
What’s Included
- SIG Sauer factory hard case
- Six 21-round steel double-stack SIG P320 magazines: four with X-Series extended base pads and two with slim, standard-style floorplates (several bodies marked "MADE IN ITALY")
- Grayguns P320ST System – Competition Straight Trigger System (uninstalled, in retail packaging)
- Assorted color-coded recoil springs for P320 (weights unspecified)
The XFIVE configuration centers on a 5-inch carbon steel bull, match-grade barrel paired with a striker-fired, semi-automatic action. The serialized modular FCU is visible through the frame window, and factory markings include "NEWINGTON, NH, USA" on the frame and "9mm x 19" on the barrel. The factory part number is 320X5-9-BAS.
The slide features weight-reducing lightening ports on top along with both front and rear cocking serrations for positive manipulation. Sighting is handled by Dawson-pattern iron sights with a green fiber-optic front and a fully adjustable rear, as specified for this model.
The X-Series polymer grip module includes a SIG medallion, extended beavertail, undercut trigger guard, and a removable flared magwell. A full-length Picatinny/1913 accessory rail runs the dust cover. Capacity is 21+1, and this pistol comes with six 21-round magazines: four with X-Series extended base pads and two with slim, standard-style floorplates; several magazine bodies are marked "MADE IN ITALY."
This example is the early, non-Legion XFIVE configuration with the polymer X-Series grip module. Included extras add flexibility for tuning and setup: a Grayguns P320ST Competition Straight Trigger System (uninstalled, in retail packaging) and an assortment of color-coded recoil springs.

