Sig Sauer ROMEO3 PRO Red Dot Optic

1x31mm · 8 MOA · SIG PRO Footprint · MOTAC · MAGNETAC · 15 Brightness Settings · 20,000-Hour Runtime The Sig Sauer ROMEO3 PRO is a competition-ready pistol reflex sight with SIG PRO mounting footprint for direct mounting on SIG SAUER full-size optics-ready pistols. 31mm aspherical glass lens with red notch reflector coating for light transmittance and zero distortion. 8 MOA crisp red dot reticle. 15 total illumination settings. MOTAC (Motion Activated Illumination System) powers up when motion sensed and powers down when stationary. MAGNETAC (Magnetic Activation) turns optic off when included rubber sight cover is attached—preserves battery life between match stages and during transport. Ultra-low deck height optimizes height over bore axis. Co-witnesses with suppressor-height backup iron sights. Side-mounted CR1632 battery tray—no need to remove optic for battery changes. 20,000-hour runtime at medium brightness. IPX-7 waterproof rated. Low-profile aircraft-grade CNC aluminum housing. Backed by SIG SAUER Infinite Guarantee. Rubber sight cover included.

SIG PRO Footprint

SIG PRO mounting footprint provides direct mounting compatibility across all modern SIG SAUER full-size optics-ready pistols. Ultra-low deck height optimizes height over bore axis for consistent cheek weld and natural point of aim.

31mm Aspherical Lens

31mm aspherical glass lens with red notch reflector coating provides generous sight window with excellent light transmittance, reticle brightness, and zero distortion. The aspherical design eliminates the barrel distortion common in spherical lens designs.

8 MOA Red Dot Reticle

8 MOA crisp red dot reticle provides fast target acquisition. The larger dot facilitates rapid sight picture in competition environments and close-quarters applications.

15 Brightness Settings

15 total illumination levels allow fine-tuning for any environment—from bright outdoor daylight to low-light indoor competition conditions.

MOTAC

Motion Activated Illumination System (MOTAC) powers up when motion is detected and powers down when stationary. The system conserves battery life during periods of inactivity without requiring manual shutdown.

MAGNETAC

Magnetic Activation (MAGNETAC) turns the optic off when the included rubber sight cover is attached. Preserves battery life between match stages or during storage and transport without manual power-off.

Side-Load Battery Tray

Side-mounted CR1632 battery tray allows battery replacement without removing the optic from the pistol. Maintains zero during battery changes. 20,000-hour runtime at medium brightness settings.

Co-Witness Capability

Low-profile housing co-witnesses with suppressor-height backup iron sights. Provides backup aiming capability when optic is mounted.

IPX-7 Waterproof

IPX-7 waterproof rated for complete water immersion up to 1 meter. Fogproof construction protects against temperature-induced fogging.

Aircraft-Grade Aluminum Housing

Low-profile CNC-machined aircraft-grade aluminum housing ensures reliable service and maintains optical alignment under recoil.

SIG Infinite Guarantee

Backed by SIG SAUER Electro-Optics Infinite Guarantee—lifetime, fully transferable warranty. The Sig Sauer ROMEO3 PRO delivers competition-ready pistol optic performance—31mm aspherical lens with MOTAC, MAGNETAC, and SIG PRO footprint for dominant red dot capability.

Specifications:

• Manufacturer: Sig Sauer
• Model: ROMEO3 PRO
• Magnification: 1x
• Objective Lens: 31mm (Aspherical)
• Lens Coating: Red Notch Reflector
• Reticle: 8 MOA Red Dot
• Brightness Settings: 15
• Motion Activation: MOTAC
• Magnetic Activation: MAGNETAC (Rubber Sight Cover)
• Battery: CR1632 (Side-Mounted Tray)
• Battery Runtime: 20,000 hours (at Medium Brightness)
• Waterproof: IPX-7 (Complete Immersion to 1 Meter)
• Fogproof: Yes
• Mounting Footprint: SIG PRO
• Co-Witness: Yes (Suppressor-Height Iron Sights)
• Housing Material: Aircraft-Grade CNC Aluminum
• Deck Height: Ultra-Low
• Included: Rubber Sight Cover
• Warranty: SIG SAUER Infinite Guarantee (Lifetime, Fully Transferable)