SIG SAUER ROMEO-MSR Gen II 1x20mm 2 MOA Red Dot Sight

SIG SAUER ROMEO-MSR Gen II 1×20mm Red-Dot Sight

The SIG SAUER ROMEO-MSR Gen II is a compact 1×20mm red-dot sight developed for modern sporting rifles and other compatible firearms using an M1913/Picatinny rail. This listing is the red 2 MOA dot version in black, identified by manufacturer part number SORMSR101 and UPC 798681694624.

Built around a refreshed industrial design, the Gen II model combines a compact housing with a see-through riser mount that supports a convenient co-witness setup on compatible rifle platforms. The non-magnified optical system keeps both-eyes-open aiming intuitive, while the 2 MOA dot provides a useful balance between rapid acquisition at close distance and a reasonably precise aiming point on smaller targets.

Simple, Direct Illumination Control

An analog rotary dial controls 12 brightness settings: ten for daylight use and two intended for night-vision equipment. The dial gives the shooter a direct, tactile way to select illumination without navigating electronic menus. Because lighting conditions, target color, and background contrast can change, the range of settings helps keep the dot visible without making it unnecessarily bright.

The sight uses one CR2032 battery. SIG SAUER lists a 2 MOA red reticle for the SORMSR101 configuration and 1 MOA adjustment increments, allowing windage and elevation corrections in predictable steps during zeroing. The parallax-free optical design is intended to help maintain a consistent aiming reference when the shooter’s eye is not perfectly centered behind the optic.

Rugged Rifle-Ready Construction

• 1×20mm optical system: Non-magnified view for fast target engagement.
• 2 MOA red dot: Compact aiming point suited to general-purpose carbine use.
• 12 illumination settings: Ten daylight settings plus two night-vision settings.
• Rotary control: Straightforward brightness adjustment with a tactile dial.
• See-through riser mount: M1913/Picatinny interface designed to support compatible co-witness arrangements.
• IPX7 rating: Waterproof construction backed by fog-proof performance.
• Protective lens technologies: SpectraCoat, LensArmor, and LensShield treatments support light transmission, abrasion resistance, and easier shedding of water and contaminants.

Compact Size and Practical Handling

SIG SAUER lists the SORMSR101 at approximately 69.7mm long, 44.8mm wide, and 62.9mm high, with a weight of about 5.7 ounces. That compact footprint helps keep added bulk modest on a rifle or carbine while retaining a full protective housing and elevated mount. The optic is optimized for MSR platforms but can be used on other firearms with an appropriate rail and installation that follows the manufacturer’s instructions.

Before use, confirm that the mount is fully seated on the rail and tightened to the torque specification in the owner’s manual. Establish a zero appropriate for the firearm and ammunition, then recheck mounting hardware and zero periodically. Lens surfaces should be cleaned with suitable optics tools rather than abrasive cloths or harsh chemicals.

Specifications

• Manufacturer: SIG SAUER
• Model: ROMEO-MSR Gen II
• Magnification: 1×
• Objective lens: 20mm
• Reticle: Red 2 MOA dot
• Adjustment increment: 1 MOA
• Brightness settings: 12 total; 10 daylight and 2 night vision
• Mount: See-through M1913/Picatinny riser
• Waterproof rating: IPX7
• Battery: One CR2032
• Color: Black
• Manufacturer part number: SORMSR101
• UPC: 798681694624

This listing includes the ROMEO-MSR Gen II sight in the specified SORMSR101 configuration. Firearm and ammunition are not included.