Sig Sauer P320 X-Five 9mm, Full-Size, 5 in Barrel, Black, Fiber-Optic/Adjustable Sights, 21+1, 4x 21-Round Mags, Factory Case
The Sig Sauer P320 X-Five is a full-size 9mm built for precise control and fast handling. This example pairs a 5-inch barrel with an X-Series grip module, flat-faced trigger, lightened slide, and fully adjustable rear sight with a green fiber-optic front. It includes four 21-round steel magazines and the SIG SAUER factory hard case.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There are scuffs and wear visible throughout.
What’s Included
- SIG SAUER factory hard case
- 4x 21-round magazines
The 5-inch steel barrel and black slide feature front and rear cocking serrations with top lightening windows. The sighting system uses a green fiber-optic front and a fully adjustable square-notch rear to fine-tune point of impact.
Built on the modular P320 platform, this X-Series variant uses a removable fire control unit (FCU) and a full-size polymer grip module. The module integrates an external flared magazine well, an extended beavertail, a high undercut trigger guard, textured grip panels, and SIG medallions molded into the frame.
The striker-fired action is paired with a flat-faced, straight trigger for a consistent press. A push-button magazine release manages the four included 21-round steel magazines, which have extended base pads and are marked Made in Italy.
A 1913/Picatinny accessory rail with five cross-slots is molded into the dust cover for mounting compatible lights or accessories. The pistol presents a uniform black finish across slide and frame and is made in the USA.

