SIG SAUER ROMEO-X Enclosed PRO 6 MOA Green Dot Sight

Description

The SIG SAUER ROMEO-X Enclosed PRO SORX1390 is a compact 1x pistol reflex sight built around a fully enclosed optical system and a highly visible 6 MOA green dot. Its sealed architecture helps keep the emitter isolated from rain, dust, lint, and other debris that can reach an open-emitter optic during daily carry, training, or field use. The black sight uses the ROMEO-X PRO mounting format and measures approximately 1.83 inches long, preserving a streamlined profile on an optics-ready handgun.

Enclosed construction for demanding use

SIG SAUER draws on the design approach behind its military-oriented pistol optics for the ROMEO-X Enclosed series. The housing is machined from rugged 7075 aluminum, providing a strong structure without unnecessary bulk. A sealed optical path protects the emitter, while a distortion-free aspherical lens presents a clear sight picture through the compact window. The sight’s low deck height is intended to make a useful iron-sight co-witness possible with many standard-height sight arrangements, depending on the pistol, cut, plate, and iron sights in use.

Inside the housing, SIG uses its patent-pending beryllium-copper flexure system to support consistent adjustment and impact resistance. This design allows the optic to remain compact while supporting the repeatable movement needed for zeroing. The result is a purpose-built handgun sight that balances enclosure, strength, and a low optical axis.

Fast, simple 6 MOA green aiming point

The single 6 MOA green dot gives the shooter an uncomplicated aiming reference. Its apparent size favors rapid acquisition at common handgun distances while remaining precise enough for deliberate range work. Green illumination can also provide strong contrast against many backgrounds, although the best color and brightness level will vary with the user’s vision and the surrounding light.

Fifteen illumination settings provide broad control over dot intensity, including three settings intended for use with compatible night-vision equipment. The controls let the user tune the reticle instead of accepting a single automatic brightness level. SIG’s MOTAC motion-activated illumination helps conserve battery power by powering the dot down during inactivity and waking it when movement is detected.

Side-access battery and practical maintenance

The side-loading battery compartment allows battery replacement without removing the optic from the slide. That layout reduces disruption to the mounting interface and can help preserve zero after a routine battery change. Rated battery life is up to 20,000 hours under the manufacturer’s test conditions; actual service life varies with brightness, temperature, battery quality, and use patterns. A sensible maintenance schedule should still include periodic battery replacement and regular function checks.

The enclosed front and rear lenses simplify basic upkeep because the emitter is not exposed in an open pocket. Wipe the lenses with clean optical-grade materials, keep the mounting screws correctly torqued to the firearm or plate manufacturer’s instructions, and confirm zero after installation, impact, service, or any change to the mounting system.

Key features

• Exact model: SORX1390, UPC 798681703487
• 1x enclosed pistol reflex sight with a 6 MOA green dot
• Black 7075-aluminum housing with sealed optical system
• Distortion-free aspherical lens
• Low deck height designed to support practical iron-sight co-witnessing
• MOTAC motion-activated illumination
• 15 brightness settings, including three night-vision settings
• Side-loading battery compartment
• Up to 20,000 hours of rated runtime
• Approximate overall length: 1.83 inches

Fit and setup notes

Before ordering, verify that the pistol, optic cut, or adapter plate accepts the ROMEO-X PRO footprint and that the selected screws are correct for the host firearm. Mounting hardware, plate requirements, and iron-sight visibility can vary by platform. After installation, follow the firearm and optic instructions, confirm secure fastener torque, establish a zero with the intended ammunition, and check the optic’s function before relying on it.