Sig Sauer Electro-Optics SORX1580 Romeo-X Sig-Loc Pro Black 1x24mm 3MOA Green Dot Reticle RX Footprint Mount

The Sig Sauer Romeo-X Sig-Loc Pro is a 1x24mm pistol red dot built on Sig's proprietary Sig-Loc mounting system—a platform engineered to deliver the rock-solid zero hold and optical clarity that serious shooters demand. If you're running a carry gun, competition pistol, or duty firearm configured with Sig-Loc mounting, this optic represents a genuine step forward in how reflex sights lock to the slide. The five-point contact design at the heart of Sig-Loc eliminates the flex and shift that can creep in under heavy recoil, while the bottom-mounted footprint geometry buys you a longer optical path—which means less parallax distortion and a crisper, more forgiving sight picture across a wider field of view than traditional top-mounted designs.

Built from 7075 aluminum with a fully sealed optical system and distortion-free aspherical glass, the Romeo-X is waterproofed to IPX-8 and tough enough for hard use. The 3 MOA green dot reticle sits clean against most targets and works well in daylight; the emitter is fully enclosed, so you're not fighting glare or window reflections. Fifteen illumination settings—including three dedicated for night vision—keep the dot visible in nearly any light, and Sig's MOTAC (Motion Activated Illumination) powers the optic down when it's holstered and back on when you draw, stretching battery life to a claimed 20,000 hours on a single CR2032. At 0.96 inches tall, the Romeo-X plays well with standard-height iron sights for a true co-witness setup. Total elevation and windage travel—40 and 80 MOA respectively—give you room to dial for distance or hold over without running out of adjustment.

This is an American-assembled optic backed by Sig's Infinite Guarantee, designed for shooters who treat their gear like their life depends on it. If your pistol is already fitted for Sig-Loc or you're planning a build around it, the Romeo-X Pro eliminates the guesswork of compatibility and delivers the integration and stability that separates a good red dot from one you'll trust without hesitation.

Key Features

• Sig-Loc five-point contact mounting system eliminates zero shift from recoil and impact
• Bottom-mounted design reduces parallax and reticle distortion for a crisp sight picture
• 3 MOA green dot reticle—clean acquisition and low visual noise
• 7075 aluminum housing with fully sealed, aspherical glass optics
• MOTAC (Motion Activated Illumination) extends battery life to 20,000 hours
• 15 illumination settings: 12 daylight levels plus 3 night vision modes
• IPX-8 waterproofing for reliable performance in rain and submersion
• 0.96-inch deck height enables standard iron sight co-witness
• Side-load CR2032 battery for quick field changes
• Assembled in the USA and backed by Sig's Infinite Guarantee

Specifications

Frequently Asked Questions

What pistols are compatible with the Sig-Loc Pro footprint?

The Romeo-X uses Sig's proprietary Sig-Loc Pro mounting footprint. Your slide must be milled or factory-configured for Sig-Loc to accept this optic directly. Sig-Loc-equipped pistol slides remain backward-compatible with traditional top-mount reflex sights if needed.

Can I co-witness with standard iron sights?

Yes. At 0.96 inches in height, the Romeo-X is designed to work with standard-height iron sights for a true co-witness configuration.

How long does the battery last?

The CR2032 battery delivers up to 20,000 hours of runtime. The optic features MOTAC (Motion Activated Illumination), which powers down when holstered to extend battery life further. The battery side-loads for quick field replacement.

What comes in the box?

The Romeo-X ships with the optic, a CR2032 battery, and is mounted on the Sig-Loc Pro (RX) footprint; check the specific product listing for any included accessories or documentation.