SIG Sauer
SIG Sauer ROMEO4S Red Dot Sight - 2 MOA Ballistic Circle Dot
SIG Sauer ROMEO4S Red Dot Sight - 2 MOA Ballistic Circle Dot
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SIG Sauer ROMEO4S Red Dot Sight - 2 MOA Ballistic Circle Dot
Features
- 2 MOA Dot with 65 MOA Ballistic Circle Reticle – Combines a precise central aiming point with a surrounding circle for quick target acquisition and holdovers.
- Hybrid Solar and CR2032 Battery System – Automatically draws power from ambient light and seamlessly switches to battery in low-light conditions, offering up to 100,000+ hours of runtime.
- MOTAC™ (Motion Activated Illumination) – Extends battery life by powering up on motion and shutting down when idle.
- 12 Brightness Settings – Includes 10 daylight levels and 2 night-vision compatible settings for versatile use in all environments.
- Precision Adjustments – 0.5 MOA click adjustments with ±50 MOA of total windage and elevation travel.
- SpectraCoat™ Lens Coating – Anti-reflective coatings ensure maximum light transmission and clarity with minimal distortion.
- Rugged Design – CNC-machined 7075-T6 aluminum housing with integrated steel shroud provides exceptional durability.
- Waterproof and Fogproof – IPX‑7 rated for submersion up to 1 meter and nitrogen purged for fog resistance.
- Quick-Detach Mount System – Includes both co-witness and low-profile mounting options.
- Unlimited Eye Relief – Enables fast and flexible target acquisition across platforms.
Technical Specifications for SIG Sauer ROMEO4S Red Dot Sight - 2 MOA Ballistic Circle Dot
Specification |
Details |
Manufacturer |
SIG Sauer |
Model / MPN |
ROMEO4S / SOR43021 |
SKU |
SOR43021 |
UPC |
798681567867 |
Magnification |
1× |
Objective Lens Diameter |
20 mm |
Reticle |
2 MOA Dot with 65 MOA Ballistic Circle |
Brightness Settings |
12 (10 daylight / 2 night-vision) |
Battery Type |
CR2032 with solar assist (side-loading) |
Battery Life |
Up to 100,000 hours |
Adjustment per Click |
0.5 MOA |
Windage / Elevation Range |
±50 MOA |
Eye Relief |
Unlimited |
Housing Material |
7075-T6 Aluminum with steel shroud |
Waterproof Rating |
IPX‑7 (submersible to 1 meter) |
Fogproof |
Yes – nitrogen purged |
Weight |
Approx. 7.6 oz (215 g) |
Mount Type |
Quick-detach co-witness and low mounts |
Finish |
Graphite / Matte Black |
Country of Origin |
USA |
Warranty |
Infinite Guarantee (housing); 5 years (electronics) |
Included Accessories
- SIG Sauer ROMEO4S 2 MOA Ballistic Circle Dot Sight
- Quick-Detach Mount with Co-Witness and Low Spacer
- CR2032 Battery (pre-installed)
- Clear Flip-Up Lens Covers
- User Manual
- Warranty Card
SEO Keywords
SIG Sauer ROMEO4S, SOR43021, 2 MOA red dot, Ballistic Circle Dot, solar red dot optic, MOTAC reflex sight, QD mount optic, waterproof tactical red dot
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