SIG Sauer M18X

Compact X‑Series variant of the M18 with factory red dot

The SIG Sauer M18X pairs the modular P320/M18 platform with X‑Series ergonomics and a factory‑installed ROMEO‑M17 red dot sight. The result is a compact duty pistol offering improved grip geometry, a flat X‑Series trigger and an optic‑ready slide with the sight pre‑installed. [oai_citation:1‡sigsauer.com](https://www.sigsauer.com/m18x.html?utm_source=chatgpt.com)

Features

• Factory ROMEO‑M17 red dot, fully enclosed and sealed
• X‑Series grip module with extended beavertail and deeper undercuts
• Flat X trigger for consistent break
• Ambidextrous controls and loaded‑chamber indicator
• Modular P320 chassis — supports drop‑in upgrades

Technical Specifications