Sig Sauer ROMEO4T-PRO Red Dot Sight 20mm FDE

Sig Sauer ROMEO4T-PRO Red Dot Sight is a compact, battery-powered non-magnifying optic that provides an illuminated reticle for fast target acquisition at short to medium ranges. It is intended for use on modern semi-automatic pistols, MSR platforms and shotguns to support target acquisition in a range of light conditions.

The ROMEO4T-PRO addresses the need for a durable, low-profile reflex sight that offers motion-activated illumination, multiple brightness settings for daytime and night vision compatibility, and a ballistic-style reticle for quick sight alignment. It is suitable for recreational range use, training and general-purpose mounted optic applications.

Key features

• Quad Ballistic Circle-Dot reticle for rapid reference and aiming.
• 1x magnification with a clear 20 mm aperture for unobstructed sight picture.
• MOTAC (Motion Activated Illumination) for automatic on/off operation.
• Top-mounted activation with a night-vision override control.
• Multiple illumination settings: daytime and NV-compatible modes.
• Durable half-inch hex mount with included mounting spacers/heights.
• Includes clear flip-back lens covers, opaque front flip cover and an anti-reflection device (kill-flash) accessory.
• Lightweight construction; stated weight approximately 6.3 oz.

Specifications & construction

Construction features include applied matte finish and multi-layer lens coatings for glare reduction and improved transmission. The optic is described as waterproof and assembled in the USA. Power is provided by a coin-style battery; reported runtime with the specified battery is long-duration operation measured in tens of thousands of hours.

Reported physical measurements include overall length and a compact footprint suitable for low-profile mounting. Windage and elevation adjustments are provided with fine increment clicks.

Compatibility & intended use

The ROMEO4T-PRO is designed to mount on common pistol and MSR sight footprints and is marketed for short and medium range engagements and general recreational shooting across a range of platforms. Typical setups include slide-mounted pistol optics, MSR/duty rifles with a low-profile primary reflex sight, and shotguns where a compact non-magnified reticle is preferred.