Sig Sauer ROMEO4T 1x20mm Red Dot Sight | 2 MOA | SOR43131

The SIG SAUER ROMEO4T is a compact, rugged closed‑tube red dot sight designed for modern semi‑automatic pistols, MSR platforms and shotguns. It pairs a Ballistic Circle‑Dot reticle with MOTAC motion‑activated illumination and solar‑assist power for extended runtime. The sight’s 7075 aluminum housing and sealed optical system are intended for frequent use in demanding environments.

Product Specifications

• The magnification is 1x for true‑aiming dot presentation and unlimited eye relief.
• The objective/clear aperture is 20 mm.
• The reticle is a 2 MOA red ballistic dot with a 65 MOA circle.
• The adjustment increment is 0.50 MOA.
• The sight uses a CR2032 battery with solar‑assist for extended runtime.
• The listed runtime is in excess of 100,000 hours with combined solar and battery usage.
• The optic features MOTAC (Motion Activated Illumination) to power illumination on motion and conserve battery when static.
• The main housing and components are made from 7075 Aluminum for strength and reduced weight.
• The external finish is Flat Dark Earth.
• The unit weight is 7.60 oz.
• The mount type is a 1/2″ hex bolt with included low and QR/absolute co‑witness spacers.
• Included accessories list flip‑back lens covers, battery, low‑profile Torx mount, and co‑witness mount/spacer.
• The sight is specified as waterproof and fog‑proof (IP rating conflict present in source data; see notes).
• The total windage and elevation travel is 100 MOA.
• UPC: 798681585939

Built to perform across short and medium ranges, the ROMEO4T blends proven red‑dot ergonomics with long service life and a modular mounting package. Its solar‑assist system and motion sensor extend operation between battery changes while the Ballistic Circle‑Dot reticle offers fast target acquisition with simple hold‑offs for common close‑range engagements. This package is suitable for competitive pistol work, practical MSR shooting, and general range training where a compact, reliable sight is required.

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