USED Sig Sauer P320 M18 XSeries RX 9mm Pistol with ROMEO-M17 Optic – Coyote Tan, 21+1 Capacity

Used only one available.

The Sig Sauer P320 M18 XSeries RX is a premium evolution of the military-inspired M18 platform, combining proven reliability with enhanced ergonomics and modern optics integration. Finished in Coyote Tan and built around the X-Carry grip module, this pistol delivers improved handling, aggressive styling, and increased magazine capacity in a compact, duty-ready configuration. This example includes the factory-installed SIG ROMEO-M17 enclosed red dot optic, designed specifically for the M17/M18 platform.

Featuring a 3.9" barrel and XSeries grip module with integrated magwell, the M18 XSeries RX provides a more refined shooting experience compared to the standard M18. The flat-faced trigger offers a crisp break and shorter reset, while the SIGLITE night sights provide dependable low-light capability. The ROMEO-M17 optic sits low on the slide for a natural sight picture and rugged performance suitable for duty, carry, or range use.

This pistol appears to be in excellent condition and includes the factory hard case along with three magazines and accessories shown. Whether you are a collector of military-inspired pistols, a red-dot enthusiast, or someone looking for a premium defensive handgun, the M18 XSeries RX delivers outstanding versatility and performance.

Specifications