SIG SAUER ROMEO-X SIG-LOC Pro 3 MOA Red Dot Sight

SIG SAUER ROMEO-X SIG-LOC Pro 3 MOA Enclosed Reflex Sight

The SIG SAUER ROMEO-X SIG-LOC Pro is a fully enclosed pistol reflex sight built around SIG’s proprietary SIG-LOC Pro mounting interface. This exact black model uses a crisp 3 MOA red dot, giving the shooter a precise aiming reference without the larger outer circle found on circle-dot versions. Its sealed optical system helps protect the emitter and internal lens surfaces from rain, dust, lint, debris, and other contamination that can reach an open-emitter sight.

Manufacturer part number SORX1530 identifies the enclosed 1x24mm SIG-LOC Pro model with the 3 MOA red-dot reticle. The housing is machined from 7075 aluminum and incorporates a loaded-chamber-indicator gas deflector. Anti-reflection grooves on the rear surfaces help control unwanted glare, while the low deck height is designed to preserve a natural presentation and usable sight picture on compatible SIG-LOC Pro-equipped pistols.

3 MOA Red Dot and 15 Brightness Settings

The 3 MOA dot balances visibility and precision for typical pistol distances. Fifteen brightness settings provide a broad operating range: 12 daylight settings and three settings intended for use with compatible night-vision equipment. SIG’s D.A.R.C. technology—Dark Adaptive Reticles and Coatings—is designed to support GEN3+ night-vision use when the appropriate low brightness level is selected.

Recessed adjustment buttons sit within a protective plate to reduce accidental activation. The sight returns to its previous brightness setting when powered back on. Because this is the dedicated 3 MOA version, its display remains a single red dot rather than cycling among multiple circle-and-dot configurations.

MOTAC and MAGNETAC Operation

SIG’s MOTAC motion-activated illumination system automatically powers the reticle down after approximately two minutes without movement. When movement is detected, the optic returns to the previous brightness setting. This provides a ready reticle while limiting unnecessary battery drain during periods of inactivity.

The ROMEO-X SIG-LOC Pro also supports SIG’s MAGNETAC system. When paired with a compatible MAGNETAC holster, the optic can switch off while holstered and reactivate when the pistol is drawn. MAGNETAC operation depends on using a compatible holster; MOTAC remains the standard motion-based power-management system.

Battery, Runtime, and Environmental Protection

Power is supplied by one CR2032 battery. SIG specifies a minimum continuous runtime of approximately 20,000 hours at a medium brightness setting in dot-only operation. Actual battery life depends on brightness, movement, storage conditions, temperature, battery quality, and use of compatible activation features.

The optical system is fully enclosed, sealed, and purged. SIG rates the sight to IPX8 for water resistance. The enclosed layout prevents a piece of debris or water droplet from directly blocking the emitter’s path to the lens, an important practical advantage for a pistol carried in changing weather or exposed environments.

Compact SIG-LOC Pro Configuration

The optic measures approximately 1.90 inches long, 1.24 inches wide, and 0.96 inch high. Weight is approximately 1.46 ounces with the battery installed, and the clear aperture measures 24mm. These dimensions keep the sight compact while providing a protected viewing window and enclosed optical path.

The SIG-LOC Pro is a proprietary mounting interface and should not be assumed to fit DeltaPoint Pro, ROMEO-X Pro, RMSc, or other slide cuts without the correct factory configuration. Before ordering, verify that the host pistol or slide is specifically prepared for the SIG-LOC Pro footprint. Installation should follow the firearm and optic manuals, including the specified screws, torque, thread preparation, and curing time.

Windage and Elevation Adjustment

Windage and elevation adjustments move in 1.5 MOA increments per click. The optic provides approximately 80 MOA of total windage travel and 40 MOA of total elevation travel. After installation, establish an initial zero at close range, confirm it at the intended distance, and recheck mounting security and zero after the first range session.

Key Features

• Reticle: 3 MOA red dot
• Magnification: 1x
• Clear aperture: 24mm
• Mounting interface: proprietary SIG-LOC Pro footprint
• Housing: enclosed 7075-aluminum construction
• Brightness: 15 settings, including 12 daylight and three night-vision settings
• Power: one CR2032 battery
• Runtime: approximately 20,000 hours at a medium setting
• Activation: MOTAC motion activation and MAGNETAC compatibility
• Water resistance: IPX8
• Adjustment: 1.5 MOA per click
• Dimensions: approximately 1.90 x 1.24 x 0.96 inches
• Weight: approximately 1.46 ounces with battery

Product Identification

• Manufacturer: SIG SAUER
• Model: ROMEO-X SIG-LOC Pro
• Manufacturer part number: SORX1530
• UPC: 798681715862
• Color: Black