The SIG Sauer ROMEO4T in Flat Dark Earth, part SOR43131, is a 1x red dot sight with a 20 mm aperture and the Ballistic Circle Dot reticle in red, selectable across four modes.
A solar panel does the work in daylight and the CR2032 sits in reserve for everything else. That division of labour is how SIG reach a rated life beyond 100,000 hours from a coin cell.
Windage and elevation move in 0.5 MOA per click, with 100 MOA of total elevation travel and 100 MOA of total windage travel to play with. Twelve brightness settings split ten for daylight and two for use behind night vision. SIG rate the sight IPX-7 and give the weight as 7.6 oz. The finish is Flat Dark Earth, which is the point of this part number rather than the black one.
It suits a rifle that lives outdoors and gets picked up at short notice, because the panel means the reserve cell is barely touched between range days. The four reticle modes let you take just the dot when you want a clean picture, or bring the circle in when close-range speed matters more than a fine hold. SIG do not publish the dot and circle sizes on the product page, so we have not quoted figures for them here — the modes are what the switch gives you, and the sizes are best judged through the glass.
Why shooters choose the ROMEO4T FDE
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Reticle — Ballistic Circle Dot in red, with four selectable modes
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Power — solar panel over a CR2032 cell, rated beyond 100,000 hours
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Illumination — 12 settings — 10 daylight and 2 night vision
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Turrets — 0.5 MOA per click, with 100 MOA of elevation and 100 MOA of windage travel
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Sealing — IPX-7 rated at 7.6 oz
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Finish — Flat Dark Earth
What the ROMEO4T FDE fits
It is a rifle-scale sight for a MIL-STD-1913 rail, so a straight-pull AR-pattern carbine, a lever-release rifle or a railed practical shotgun all suit it. The same sight is built in black, and if you want the lighter housing the ROMEO4T-PRO in FDE is the one to compare, with the ROMEO4XT-PRO in FDE above it. Our optic mount height guide covers where to sit it on the rail.
Specifications
| Magnification |
1x (non-magnified) |
| Aperture |
20 mm |
| Reticle |
Ballistic Circle Dot, four modes, red |
| Illumination |
12 settings — 10 daylight, 2 night vision |
| Adjustment |
0.5 MOA per click |
| Adjustment range |
100 MOA total elevation, 100 MOA total windage |
| Power |
Solar panel with CR2032 backup |
| Battery life |
Over 100,000 hours |
| Water resistance |
IPX-7 |
| Weight |
7.6 oz |
| Finish |
Flat Dark Earth |
| Brand |
SIG Sauer |
| MPN |
SOR43131 |
A sight that mostly runs on daylight, in the colour that matches the furniture. Order the ROMEO4T FDE today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Red Dot Sights, ROMEO-X Compact or browse all SIG Sauer.
