Sig Sauer P320 XSeries XFULL RXP 9mm – 10-Round Compliant, Optics-Ready, Wilson Combat Grip
The P320 XFULL RXP pairs SIG’s modular, full-size striker-fired system with factory-ready red-dot capability and a 10-round compliant configuration. This example is further upgraded with a Wilson Combat WC320 grip module, giving shooters enhanced ergonomics without sacrificing the pistol’s proven reliability.
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.
Rifling Condition: Excellent Rifling – Sharp lands and grooves.
This pistol remains in great shape with only mild signs of use visible on high-contact surfaces.
What’s Included
- Wilson Combat WC320 polymer grip module (installed)
- SIG Sauer P320 XSeries full-size medium polymer grip module (loose/original)
- 2 × 10-round SIG Sauer steel magazines stamped "Made in Italy"
- SIG Sauer factory hard case
The XFULL RXP slide is cut for SIG’s ROMEO1PRO footprint and wears forward and rear cocking serrations, making optic mounting and slide manipulation straightforward. Suppressor-height X-RAY 3 tritium sights co-witness with most red dots for an immediate, daylight-bright sight picture.
At the core is SIG’s serialized Modular Fire Control Unit, allowing caliber or size conversions without an additional FFL transfer. The unit’s flat-faced trigger delivers a shorter reset for quicker follow-up shots, while integrated striker and disconnect safeties meet modern duty standards.
The installed Wilson Combat WC320 grip module refines grip angle and texture, offering a high under-cut trigger guard and aggressive stippling for improved control. A loose, factory XSeries grip module is also included for users who prefer original geometry.
A 4.7-inch stainless-steel barrel and Nitron-finished slide provide durability and corrosion resistance. The reversible magazine release, full Picatinny accessory rail, and 10-round magazines make this pistol ready for restrictive jurisdictions without compromising performance.




