Description

The Sig Sauer M18X RX is a carry-size, optics-equipped 9mm pistol built on the P320/M18 platform with XSeries enhancements. It ships factory-equipped with a ROMEO-M17 red dot optic and a coyote X-Carry grip module that adds an extended beavertail, aggressive stippling and a magwell extension. The pistol comes with multiple magazines and is configured for duty, range, and everyday carry applications where a compact, optic-ready platform is preferred.

Key Specifications

• Caliber is 9mm.
• The barrel length is 3.9 inches.
• Standard magazine capacity is listed as 21 rounds.
• The pistol includes three 21-round magazines.
• Factory-installed optic is a ROMEO-M17 red dot mounted on the slide.
• The grip module color is coyote tan with an X-Carry magwell and beavertail.
• The slide finish is coyote PVD and the barrel finish is black.
• The trigger is an XSeries flat trigger (striker-fired action).
• Overall length is 7.2 inches and weight is 30.8 oz.

The M18X RX pairs a compact carry profile with factory optics and XSeries ergonomics to deliver a modern, duty-capable platform. Its factory-mounted ROMEO-M17 and magwell-equipped grip module make it suited for shooters who prioritize fast sight acquisition, repeatable reloads and a consistent trigger interface in a compact package.