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Sig Sauer outfitted its battle-ready Romeo4C Compact Red-Dot Sight with superior quality optics, high-transmission clear notch filter coating, and a red-dot illuminated reticle. The reticle offers a 2 MOA brilliant red dot and a 65 MOA circle with ten illumination settings for daytime target acquisitions and two low-light settings for night vision devices. The red dot and the circle can be turned on separately or together. The illumination circuit also features a Motion-Activated Illumination function (MOTAC) that powers up brightness when it senses motion, and powers the brightness down when at rest. It also helps to extend the battery life to 50,000 hours in normal use. The optical properties also allow for an unlimited eye relief. To extend the battery life even more and to allow a battery-free operation, this sight also features a top-mounted solar cell.
To endure the toughest battlefield conditions, the housing is CNC-machined from a single piece of aluminum. It also provides a waterproof and fogproof performance. The windage and elevation knobs are knurled for a slip-free operation and offer 100 MOA adjustment ranges with 1/2 MOA increments. The sight offers two Picatinny mounting options: a standard Torx Picatinny mount and an absolute co-witness Picatinny quick detach riser mount. The Picatinny co-witness mount offers a see-through base that allows for sure sighting and rises optical axis 1.41" above the rail.
20mm objective lens diameter
Clear notch filter coating
Unlimited eye relief
2 MOA Red-Dot / 65 MOA Circle Reticle
2 MOA dot
65 MOA circle
Can be turned on separately or together
10 day settings
2 night vision settings
Use and Handling
1/2 MOA impact point correction
100 MOA windage and elevation
Rubberized brightness adjustment pad
Built-in solar cell:
Allows battery-free operation
Extends battery life
CNC-machined from a single piece
Ultra-lightweight and durable
Picatinny rail mounts:
Absolute co-witness 1.41" Picatinny quick release mount
Knurled turrets, knobs, and adjusters
Waterproof, rated IPX7
In the Box
SIG SAUER Romeo4C Compact Red-Dot Sight with Solar Cell (Dot-Circle Illuminated Reticle, Graphite)
Thread-In Flip-Up Lens Covers
Absolute Co-Witness 1.41" Picatinny QR Mount
Side Mounted Battery Tray
Battery & Mount Tools
Limited 5-Year Warranty on Electronics
Limited Lifetime Transferable Warranty
Table of Contents
2 MOA Red-Dot / 65 MOA Circle reticle
Objective Lens Diameter
Impact Point Correction
IPX7-rated, waterproof and submersible
1 x CR-2032 battery 1 x solar cell
2.7 x 1.6 x 1.4" / 68.6 x 40.6 x 35.6 mm
3.2 oz / 90.7 g
SIG SAUER Romeo4C Compact Red-Dot Sight with Solar Cell (Dot-Circle Illuminated Reticle, Graphite) Review