The Sig Sauer ROMEO5 Gen II Red Dot Sight (SOR5101) is a ruggedized 1x20mm compact reflex sight built for carbines, rifles, and shotguns, delivering a crisp 2 MOA red dot with 40,000 hours of CR2032 battery life, MOTAC motion-activated illumination, and a slim I-BEAM Picatinny mount in a durable IPX7-rated aluminum housing. Designed for carbine shooters, home defense rifle users, and sport shooters who want a reliable compact red dot sight for AR-platform rifles and tactical long guns with night vision compatibility and ambidextrous top-mounted controls, the SOR5101 delivers proven Sig Sauer performance at an accessible price point.
Key Features
- Part number: SOR5101
- Reticle: 2 MOA red dot
- Magnification: 1x
- Clear aperture: 20mm
- Eye relief: Unlimited
- Parallax free: Yes
- Lens coatings: SpectraCoat, LensArmor, LenShield multi-layer
- Housing: Aluminum, ruggedized industrial design
- Finish: Black
- Mount: M1913 I-BEAM Picatinny, interchangeable, absolute co-witness at 1.41 inch
- Overall length: 2.7 inches
- Overall width: 1.6 inches
- Overall height: 2.4 inches
- Weight: 5.5 oz
- Adjustment per click: 0.5 MOA
- Total windage and elevation travel: 100 MOA
- Brightness settings: 10 daylight, 2 night vision
- Battery: CR2032, side-load compartment
- Battery life: 40,000 hours with MOTAC
- MOTAC: Yes, motion-activated power on and shutoff
- Water resistance: IPX7 waterproof and fogproof
- Infinite Guarantee: Yes, Sig Sauer Electro-Optics Infinite Guarantee
- Assembled in the USA
Special Features
- The I-BEAM mount uses a narrow beam design that keeps your iron sight picture visible below the optic, giving you situational awareness and a clear path to your backup aiming solution without the bulk of traditional full-width mounts.
- MOTAC powers the sight on automatically when the rifle moves and shuts it off after a period of inactivity, stretching the 40,000-hour battery life across years of active use without manual power cycling between sessions.
- Top-mounted ambidextrous brightness controls sit directly on the housing body for one-handed operation from either side of the rifle without breaking your firing grip or shifting your cheek weld.
- Multi-layer SpectraCoat, LensArmor, and LenShield optical treatments maximize light transmission, reduce glare, and protect the lens surface from scratches and abrasion under hard field use.
Practical Benefits
- The M1913 I-BEAM mount fits any standard Picatinny or Weaver rail and puts the dot at absolute co-witness height with most carbine iron sights, giving you a backup aiming solution visible through the window without adjusting your head position.
- The 2 night vision compatible brightness positions make the SOR5101 a functional option for hunters and patrol rifle users who run Gen I through Gen III night vision devices on a dedicated low-light or night-use carbine.
- Your SOR5101 gives you a motion-activated, Sig Sauer Infinite Guarantee-backed red dot on your carbine or home defense rifle that stays ready, holds zero, and delivers a clean 2 MOA aiming point across every lighting condition you take it into.
The Sig Sauer ROMEO5 Gen II Red Dot Sight (SOR5101) with its 2 MOA red dot is a smart addition for carbine shooters, home defense rifle users, and sport shooters who want a proven, motion-activated red dot with night vision capability and an industry-leading lifetime guarantee at a competitive price.
| MANUFACTURER | SIG SAUER |