Sig Sauer P320-XTEN 10mm Full-Size, 5 in Bull Barrel, Optics-Ready Nitron Slide, 15+1, XSeries Grip
This P320-XTEN is a full-size 10mm built on SIG Sauer's XSeries architecture with a 5 inch bull barrel, an optics-ready stainless steel slide with a Nitron finish, and a flat-faced striker-fired trigger. It features a 1913-style accessory rail, an XSeries grip module sized for 10mm/.45, and fixed sights with a green ring front post marked TG-H3. Made in the United States and marked NEWINGTON, NH, USA, this example comes with two 15-round magazines and a SIG factory case, with a case label dated January 2, 2024.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling and use marks are present on exterior surfaces. Please refer to the photos for details.
What’s Included
- SIG Sauer factory hard plastic case (gray)
- Two 15-round SIG Sauer factory steel magazines
The XTEN configuration delivers the P320 platform in 10mm Auto with a purpose-built XSeries grip module for the larger cartridge. The extended beavertail and undercut trigger guard support a solid, high grip, while the flat-faced trigger provides a straight press consistent with the XSeries design.
The optics-ready slide is stainless steel with a Nitron black finish and includes front and rear cocking serrations. It uses a removable cover plate over the optics cut, allowing the pistol to run irons as configured. Fixed sights include a two-dot rear notch and a green ring front post marked TG-H3.
A 5 inch bull barrel anchors the full-size format and pairs with the striker-fired action. The dust cover incorporates a multi-slot 1913-style accessory rail for lights or other compatible accessories. The pistol has no external manual safety and uses SIG's modular P320 fire control system.
Capacity is 15+1 rounds of 10mm, and this pistol includes two factory 15-round magazines. Overall dimensions are 8.5 inches in length, 5.6 inches in height, and 1.3 inches in width. Weight is 33 oz with magazine. The frame is polymer in black, and the slide finish is Nitron black. The XTEN line was announced in 2022; this pistol is identified by mfg part number 320X5-10-BXR3-R2 and is marked Made in United States.