Sig Sauer Electro-Optics SORX1690 Romeo-X Sig-Loc Compact Black 1x24mm 6MOA Green Dot Reticle RX Footprint Mount

The Sig Sauer Romeo-X Sig-Loc Compact is a 1x24mm pistol-mounted red dot designed to deliver rock-solid zero retention and crystal-clear glass in a form factor built for carry guns and duty weapons. Built on Sig's proprietary Sig-Loc mounting system—technology proven on the MIL-SPEC Romeo-M17—this compact optic pairs a five-point mechanical lockup with a longer focal length that cuts parallax and reticle distortion, giving you a forgiving sight picture whether you're running drills at the range or trusting it downrange.

The optic's real advantage is what you get under the hood: a distortion-free aspherical lens and fully enclosed optical system sealed to IPX-7 waterproofing standards, housed in rugged 7075 aluminum. With 15 illumination settings (12 for daylight, 3 dedicated to night vision), MOTAC motion-activated technology to save battery life, and a CR1632 cell good for 20,000 hours, the Romeo-X runs when you need it and doesn't drain down sitting in a safe. The side-load battery design keeps setup simple, and the low deck height lets you co-witness with standard iron sights without stack-ups.

This version ships with a 6 MOA green dot reticle on the RX footprint mount, making it compatible with a growing range of slide cuts. Whether you're building a carry gun, outfitting a duty pistol, or setting up a dedicated training rig, the Sig-Loc's five-point contact system means recoil shock and hard impacts won't walk your zero. Assembled in the USA and backed by Sig's Infinite Guarantee, it's built to handle what you throw at it.

Key Features

• Five-point Sig-Loc mechanical lockup eliminates shift under recoil and impact
• Distortion-free aspherical glass lens with longer focal length reduces parallax
• Fully sealed and waterproof (IPX-7) optical system in 7075 aluminum housing
• Motion-Activated Illumination (MOTAC) extends 20,000-hour battery life
• 15 illumination settings: 12 daylight + 3 night vision modes
• Low deck height for co-witness with standard iron sights
• Side-load CR1632 battery design for quick changes
• Assembled in the USA; backed by Infinite Guarantee

Specifications

Frequently Asked Questions

What pistols does the Romeo-X Sig-Loc Compact mount on?

The optic uses the RX footprint Sig-Loc mount, which is compatible with firearms that accept RX footprint slide cuts. Check your pistol's spec sheet or contact the manufacturer to confirm compatibility before purchase.

Can I co-witness this red dot with my iron sights?

Yes. The Romeo-X Sig-Loc Compact has an industry-low deck height, which allows you to use standard-height iron sights for co-witness backup aiming.

How tough is this optic? Will it hold zero after hard use?

The Sig-Loc's five-point mechanical lockup creates five contact points between the optic and slide, significantly reducing shift from recoil and impact shock. The housing is machined from 7075 aluminum, and the optical system is fully enclosed and sealed to IPX-7 waterproofing standards—designed to take punishment from professional and civilian operators.

What's included with the optic, and how do I change the battery?

The Romeo-X Sig-Loc Compact ships with a CR1632 battery and is ready to mount on a compatible RX footprint slide cut. The battery is accessed via side-load design for quick and field-friendly replacement without removing the optic from the slide.