Sig Sauer Romeo-X Compact Reflex Sight with Circle Dot - Black

The Sig Sauer Romeo-X Compact reflex sight delivers military-grade red-dot performance in a slim profile built for modern optics-ready pistols. This open-emitter sight pairs a 2 MOA red dot with a 32 MOA circle reticle, giving you both precision aiming and rapid target acquisition in a single glass plane. Whether you're running a P365, Shield RMSc footprint, or R1P/R2 mount, the Romeo-X Compact installs directly without adapters and sits low enough to co-witness with standard-height iron sights—a real advantage if you want backup aiming capability without losing glass real estate.

Built from CNC-machined 7075 aluminum, the Romeo-X Compact is rugged enough for duty and refined enough for the range. The side-load battery compartment is quick to access, and the MOTAC motion-activated illumination system keeps the dot bright when you need it and preserves battery life when you don't. With 20,000 hours of runtime on a single CR1632 battery and 15 total illumination settings—12 for daylight and 3 tuned for night vision—you're covered from dawn shooting to after-dark training. All adjustments dial in 1.5 MOA increments across an 80 MOA travel window both directions, and IPX-7 waterproofing handles the elements without flinching.

Designed, tested, and assembled in the USA, the Romeo-X Compact distortion-free aspherical lens and patent-pending beryllium copper flexure arm are engineered to survive hard use. At just 1 ounce and 1.62 inches long, it won't shift your carry balance or slow your draw. This is the sight Sig built for shooters who want reliability they can trust without the hype.

Key Features

• Circle dot reticle with independently selectable 2 MOA dot and 32 MOA circle for versatile target acquisition
• Ultra-low deck height enables co-witness with standard iron sights
• Open-emitter design for distortion-free, wide field of view
• Direct mounting for P365, Shield RMSc, R1P, and R2 footprints—no adapters needed
• MOTAC motion-activated illumination with 15 settings (12 day, 3 night vision)
• Side-load battery compartment for quick CR1632 swap in the field
• 20,000-hour battery life per charge
• CNC-machined 7075 aluminum housing with patent-pending flexure arm
• IPX-7 waterproofing for reliability in wet and dusty conditions
• Assembled in the USA

Specifications

Frequently Asked Questions

What pistols is the Romeo-X Compact compatible with?

The Romeo-X Compact fits directly onto pistols with R1P/R2 footprints, DeltaPoint Pro footprints, P365 mounts, and Shield RMSc mounts. If your optics-ready pistol uses one of these mounting patterns, you can install it without adapters.

Can I use iron sights with this sight if it breaks?

Yes. The ultra-low deck height is specifically designed to allow co-witnessing with standard-height iron sights, so you maintain a reliable backup aiming system.

How long does the battery last?

You'll get approximately 20,000 hours of runtime on a single CR1632 battery. The side-load compartment makes battery changes quick and easy in the field.

Is this sight weather-sealed?

Yes, the Romeo-X Compact is rated IPX-7 waterproof, so it handles rain, splashing, and wet conditions without compromising performance.