Sig Sauer Electro-Optics Romeo-MSR Gen II 1x20mm 2 MOA Green Dot Reflex Sight

The Sig Sauer Electro-Optics Romeo-MSR Gen II is a sealed compact reflex sight purpose-built for MSR rifles, carbines, shotguns, and air rifles. This second-generation update delivers a crisp 2 MOA green dot in a lightweight, ruggedized housing, giving shooters rapid target acquisition with both-eyes-open aiming across close and intermediate ranges.

At the heart of the optic, 1x magnification is paired with a 20mm objective window and Sig Sauer's high-performance Spectracoat, Lensarmor, and Lenshield lens coatings for a bright, distortion-free sight picture. The illuminated 2 MOA green dot is driven by an analog rotary illumination dial with 12 individual brightness settings, including two dedicated night vision settings, so the reticle stays visible from full daylight to low-light and NOD environments.

Built around a matte black housing, the Romeo-MSR Gen II is fog proof, shockproof, and waterproof for reliable field performance. Adjustable windage and elevation with 1 MOA per-click adjustments make zeroing straightforward, while a long-life CR2032 battery keeps power flowing for extended shooting sessions. The optic measures just 2.74" long and weighs only 5.70 oz, keeping your platform light and well-balanced.

Whether you mount it on an AR-pattern MSR, a tactical carbine, a slug-ready shotgun, or an air rifle, the Romeo-MSR Gen II offers a versatile, do-everything aiming solution. Its compact footprint, generous eye box, and rugged sealed construction make it a strong choice for home defense, range training, and recreational shooting alike.