The Sig Sauer Romeo-X Pro is a miniature reflex sight designed for pistol and carbine use. This open emitter variant features an integral rear iron sight machined into the housing, providing a backup sighting system that co-witnesses through the lens window. The housing is machined from 7075-T6 aluminum and hardcoat anodized for durability under sustained slide reciprocation. The sight is built around the DPP (Delta Point Pro) mounting footprint, providing compatibility with a wide range of milled slides and adapter plates. Windage and elevation adjustments are made in 1 MOA increments. Sig Sauer's MOTAC (Motion Activated Illumination) system activates the reticle upon detecting motion and powers down after a period of inactivity to conserve battery life.

This example features a red circle dot reticle, combining a 2 MOA center dot with a 32 MOA outer ring for rapid target acquisition at close distances while allowing precision aiming at extended range. Power is supplied by a CR1632 battery loaded from the side of the housing, allowing replacement without removing the optic from the firearm. Brightness is adjustable across 15 settings, including two night vision compatible levels. The optic uses an aspherical lens with anti-reflective coatings. No original box or accessories included.

Specifications

• Manufacturer: Sig Sauer
• Model: Romeo-X Pro (Open Emitter)
• Reticle: Circle dot (2 MOA dot, 32 MOA circle)
• Reticle Color: Red
• Emitter Type: Open
• Backup Sights: Integral rear iron sight
• Brightness Settings: 15 (3 night vision compatible, 12 daylight)
• Housing Material: 7075-T6 aluminum
• Finish: Hardcoat anodized, black
• Battery: CR1632 (side loading)
• Battery Life: Up to 20,000 hours
• Power Management: MOTAC motion activation
• Adjustment Click Value: 1 MOA per click
• Mounting Footprint: DPP (Delta Point Pro)
• Water Resistance: IPX7
• Weight: ~1.6 oz