SIG Sauer P320-XTEN 10mm Full-Size XSeries, 5 in Bull Barrel, Nitron Slide, XRAY3 Sights, Optics-Ready R2, 15+1, Three 15-Round Mags
This P320-XTEN is a recent XSeries release chambered in 10mm, built around SIG's modular P320 FCU architecture and a purpose-built 10mm/.45 grip module. It pairs a 5 inch bull barrel with XRAY3 Day/Night tritium sights and an R2 optics-ready slide. The pistol ships with three 15-round magazines and the SIG factory hard case, and is manufactured in Newington, New Hampshire, USA.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present on exterior surfaces. Please refer to the photos for close-up views.
What's Included
- SIG Sauer factory hard case (gray) with SIG logo
- Owner's manual
- Three 15-round steel double-stack magazines for the SIG P320-XTEN
The full-size XSeries frame features an extended beavertail, deep trigger undercut, and aggressive grip texture. This 10mm/.45-specific grip module is designed for control with stout loads while maintaining a 15+1 capacity. A left-side magazine release and flat-faced trigger with a 90-degree break provide a familiar P320 control layout with a refined XSeries trigger feel.
The 5 inch bull barrel and Nitron-finished slide add mass up front. Front and rear serrations aid manipulation, and the R2 optics-ready cut includes a cover plate. The slide cut supports a range of popular pistol optics; adapter plates may be required depending on the model.
XRAY3 Day/Night tritium sights come standard: a high-visibility green tritium front dot paired with a two-dot tritium rear, delivering a 6.8 inch sight radius. The full-length 1913 accessory rail has five slots for mounting compatible accessories.
Dimensions are dialed for duty-size performance: overall length 8.5 inches, height 5.6 inches, width 1.3 inches, and an approximate weight of 33 ounces with magazine. The pistol is finished in black with a Nitron black slide over a black polymer frame and is manufactured in the USA.




