SIG Sauer P320 XSeries XCompact R2 9mm, 3.6 in Barrel, X-RAY3 Sights, Optics-Ready, Black Nitron Slide, 15+1, 3 Magazines, Case & Holster
The SIG Sauer P320 XSeries XCompact R2 is a compact, modular 9mm built around the P320’s removable serialized FCU with XSeries ergonomics and a 3.6 in barrel. This R2 variant features an optics-ready slide, factory X-RAY3 day/night sights, and a flat-faced trigger. It comes well-equipped with three 15-round steel magazines, a SIG factory hard case, and a SIG OEM polymer paddle holster.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: This firearm is in great shape overall, with a few small cosmetic marks noted on exterior surfaces.
What’s Included
- 3x 15-round steel double-stack magazines
- SIG Sauer factory hard case
- SIG Sauer OEM polymer paddle holster
The XSeries XCompact R2 combines a compact 3.6 in carbon steel barrel with a black Nitron-finished slide that wears front and rear cocking serrations. The striker-fired action pairs with a flat-faced trigger for a consistent pull in a slim, carryable footprint.
The R2 optics-ready slide accepts optics sharing the SIG ROMEO1PRO/ROMEO2 and Leupold DeltaPoint Pro footprints. The rear sight is mounted on the removable optic cover plate, and the factory X-RAY3 day/night sights feature a high-visibility green-ring front dot. Sight radius is 5.5 in.
Built on the modular P320 platform, the serialized Fire Control Unit (FCU) is removable, allowing the grip module to be changed. The XSeries grip frame adds an extended beavertail, a high undercut trigger guard, and a mild magwell flare for control and efficient reloads.
Practical features include a four-slot M1913 accessory rail on the dust cover and tool-less takedown that requires no trigger press. This configuration has no external manual thumb safety. Capacity is 15+1 with the included steel double-stack magazines.




