Sig Sauer M18X RX 9mm 3.9-inch ROMEO-M17, 3×21rd Mags

The Sig Sauer M18X RX is a carry‑sized 9mm pistol equipped at the factory with a ROMEO‑M17 red dot and a host of XSeries enhancements tailored for faster, more controlled handling. It ships with three 21‑round magazines and features an X‑Carry coyote grip module with an extended beavertail, aggressive stippling and a magwell for quicker reloads. The pistol pairs a 3.9‑inch barrel with Siglite night front sight and factory optic installation for a versatile duty or everyday‑carry platform.

Key Specifications

• The caliber is 9mm Luger.
• The barrel length is 3.9 inches.
• The magazine capacity is 21 rounds.
• The package includes 3 × 21‑round magazines.
• A factory‑mounted ROMEO‑M17 red dot optic is installed on the slide.
• The listed weight is 30.8 ounces.
• The overall length is 7.20 inches.
• The trigger is an X‑Series flat trigger.
• The grip color is specified as coyote tan.
• The slide finish is Coyote PVD.

Purpose‑built for informed shooters who value practical, modern features, the M18X RX blends a compact carry profile with optic‑ready capability and capacity for extended use. Its XSeries ergonomics and magwell help speed reloads and improve control, while the factory ROMEO‑M17 delivers a fast sight picture for everyday carry, duty, or range use.

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