Sig Sauer P320-XTEN X-Series 10mm Full-Size, 5.0 in Bull Barrel, Nitron Slide, Tritium Sights, R2 Optic Cut, 15+1, 2 Mags
This Sig Sauer P320-XTEN X-Series is a full-size 10mm with a 5.0 in non-threaded bull barrel, tritium day/night sights, and a factory R2 optic cut. It features an X-Series polymer grip module with an extended beavertail, a flat-faced trigger, and an M1913 accessory rail. The pistol includes two 15-round factory steel magazines and comes in a SIG Sauer hard case. It is marked NEWINGTON, NH, USA, uses a windowed FCU with matching serial, and has an approximate weight of 33 oz with magazine.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore 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 from previous use. The bore is bright and clean. See photos for close-ups.
What’s Included
- SIG Sauer factory hard case
- Owner's manual
- Two 15-round factory SIG Sauer steel magazines for the P320-XTEN
The 5.0 in non-threaded bull barrel pairs with the striker-fired action to deliver a consistent, flat-faced trigger press. The full-size X-Series grip module with extended beavertail provides a stable hold and manages the 10mm cartridge effectively.
The Nitron-finished slide includes front and rear serrations for positive manipulation. A factory R2 optic cut with cover plate allows mounting of compatible pistol red-dot optics; adapter plates may be required for certain models, offering straightforward sighting upgrades when desired.
Bright, durable tritium day/night sights are installed from the factory, with a TG-H3 green-dot front and a rear unit featuring two luminous inserts for low-light visibility.
Practical features include a true M1913 accessory rail for lights or lasers, an approximate weight of 33 oz with magazine, and a 15+1 capacity. The windowed FCU with matching serial and NEWINGTON, NH, USA markings add clarity on configuration and origin.
Identified by manufacturer part number 320X5-10-BXR3-R2 (SKU 320X5-10-BXR3-R2), this recent X-Series release maintains the P320-XTEN’s 10mm capability in a ready-to-run, full-size format.