Sig Sauer Electro-Optics SORX1590 Romeo-X Sig-Loc Pro Black 1x24mm 6MOA Green Dot Reticle RX Footprint Mount

The Sig Sauer Romeo-X Sig-Loc Pro is a 1x24mm pistol red dot sight engineered for shooters who demand rock-solid zero retention and minimal optical distortion. Built on Sig's proprietary Sig-Loc mounting system—the same platform that earned trust from military and professional users—this sight delivers a low-profile, ultra-rigid connection to pistol slides through five contact points that eliminate shift from recoil and impact. Whether you're running competition stages, duty shifts, or defensive carry, the Romeo-X brings precision glass and proven reliability to the defensive and sport-shooting table.

The 6 MOA green dot reticle cuts through most lighting conditions while remaining quick on target at close to intermediate range. A longer focal length—enabled by Sig-Loc's bottom-mounted design—dramatically reduces parallax and keeps your reticle crisp across the sight picture, so you're not fighting optical distortion when you need to trust your aim. The fully enclosed and sealed optical system, wrapped in aerospace-grade 7075 aluminum, handles the punishment of repetitive shooting without flinching. At just 0.96 inches tall, it co-witnesses with standard pistol iron sights, giving you backup aiming reference without forced trades.

Motion-activated illumination (MOTAC) springs to life when you move and powers down when you're still, stretching a single CR2032 battery to 20,000 hours of real-world use. Fifteen illumination levels—including three dedicated night vision modes—let you dial brightness to your environment. IPX-8 waterproofing means rain, submersion, and harsh conditions won't compromise your sight. This is a purpose-built optic for the shooter who refuses to compromise on glass quality or mechanical reliability.

Key Features

• Sig-Loc mounting system with five contact points for zero retention under recoil and impact
• 6 MOA green dot reticle optimized for quick target acquisition
• Extended focal length reduces parallax and optical distortion
• 0.96-inch height for co-witness with standard iron sights
• Motion-activated illumination (MOTAC) extends battery life to 20,000 hours
• 15 illumination settings including 3 night vision modes
• Fully sealed and enclosed optical system with distortion-free aspherical glass
• 7075 aluminum housing for durability and corrosion resistance
• IPX-8 waterproofing rated for submersion
• Side-load CR2032 battery design for field convenience
• Made in the USA

Specifications

Frequently Asked Questions

Will the Romeo-X Sig-Loc Pro fit my pistol?

This sight uses the RX footprint Sig-Loc Pro mounting system. It is designed for pistol slides that are pre-cut for Sig-Loc mounting. Slides configured with Sig-Loc footprints remain fully compatible with traditional top-mount reflex sights, but this optic requires a Sig-Loc cut. Check your pistol's specifications or contact the manufacturer to confirm compatibility.

Can I use this sight with iron sights?

Yes. At 0.96 inches tall, the Romeo-X Sig-Loc Pro is designed to co-witness with standard-height pistol iron sights, giving you a backup aiming reference.

How long does the battery last?

With motion-activated illumination (MOTAC) enabled, a single CR2032 battery provides approximately 20,000 hours of operation. The side-load battery design makes replacement fast and field-friendly.

What reticle options are available?

This model ships with a 6 MOA green dot reticle. The Romeo-X platform also offers 3 MOA red dot and circle-dot reticles as alternative configurations.