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Questions & Answers
Does the FDE model have the 4 different reticle options? Expert Answer

The SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight FDE model has the Ballistic Circle Dot Reticle only.

by Hunter, Gear Expert, September 14, 2022
How do you swap out the clear lens cover for the plain black lens cover that comes in the box? The clear one doesn't rotate freely to remove. Expert Answer

Please email us at techsales@opticsplanet.com regarding your question with the SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight.

by Hunter, Gear Expert, September 6, 2022
Customer Reviews
Expert Review
Do-all optic by Matt S., Gear Expert, January 8, 2019
High quality optic that comes with all the features and accessories at a price better than their Swedish competition. This optics is built to go hard while still offering you options. Reticle choices, mount choices, flip cap choices. Solar panel an...
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5/5 found this helpful
Helpful Positive Review Best Reddot on thr market by Justin, Verified Owner, June 10, 2022
If you’re looking for an optic to trust your life choose this. I’ve used just about every premium red dot optic on the market and this one is the one that is the best. Battery life is crazy good, glass is clean, rugged, and holds zero. Tomorrow if I ...
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2/2 found this helpful
Helpful Positive Review Circle-Plex accolades by Shane, July 11, 2022
Tried the dot before the plex, kept the Circle-Plex. If you have an astigmatism, it is a Godsend. Rather than a small ragged slash, can actually see the "crosshairs." Agree with everything else everyone says about the sight in general, i.e., it's rea...
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9/9 found this helpful
Helpful Positive Review Great red dot by Don, November 23, 2022
This red dot is awesome. It's clear, and I don't get the starry effect due to my astigmatism. It's robust, and holds zero. Comes with a lot if accessories too, including a kill flash cover. Great optic for the price, highly recommend.
6/6 found this helpful
Helpful Positive Review Best red dot I’ve ever run in 10 plus years by Rob, Verified Owner, May 16, 2024
This is the best red dot I’ve ever run. Far exceeds aimpoints in my opinion at a lower price point and has the same footprint for mounts. Buy it and you’ll see the same
1/1 found this helpful
Helpful Positive Review Worth the money by BerettaARX, July 15, 2020
This is my favorite red dot that I have used. I have used eotech, aimpoints, etc and this by far my favorite. Really soldi built optic amazing battery life and I like that you can use the solar panel and run the optic without a battery.
1/2 found this helpful
Read All 15 Reviews
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Product Info for SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount

The Sig Sauer Romeo4T Tactical 1x20mm Red Dot Sight is the preferred choice of many elite military and governmental agencies, so you know it is a great option for rapid target acquisition in any terrain or light levels. These Red Dot Sights have typical SIG SAUER ruggedness and resistance to impact to keep on working through heavy recoil and tactical use. Designed for modern semi-automatic pistols, MSR platforms and shotguns, the Sig Sauer Romeo4T Tactical Red Dot lets you shoot with both eyes open to stay aware of the whole situation as it unfolds. Install the Sig Sauer Romeo4T Tactical 1x20mm Red Dot for durable, reliable sighting of moving targets and developing scenarios.image

WARNING: California`s Proposition 65

Specifications for SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount:

Manufacturer: SIG SAUER
Finish: Matte
Fabric/Material: 7075 Aluminum
Magnification: 1 x
Objective Lens Diameter: 20 mm
Illumination Type: LED
Illumination Color: Red
Brightness Settings: 10
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 0.5 MOA
Emitter Type: Enclosed
Lens Material: Glass
Optical Coating: HDX
Battery Type: CR2032
Battery Quantity: 1
Battery Life: 100000 hours
Operating Temperature: -40 - 140 Fahrenheit
Weather Resistance: Yes
Water Resistance Level: IPX-8
Water Resistant Mark: 400 m
Shockproof: Yes
Fogproof: Yes
Length: 3.33 in
Width: 1.83 in
Height: 2.46 in
Weight: 11 oz
Included Accessories: Lens Cloth, Mounting Tool, Lens Covers, Batteries, Mount
Condition: New
Package Type: Box
Magnification Type: Fixed
Quantity: 1
Red Dot Sights-Footprint: RMS
Adjustment Range: 0.5 MOA
Front Sight Color: Red
W/E Travel at 100 Yds: 100 MOA
Attachment Type: Bolt

Features of SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount:

  • Designed for modern semiautomatic pistols, MSR platforms and shotguns;
  • Short and medium range engagements and recreational shooting across a wide range of calibers and light conditions;
  • Fully ruggedized and impact resistant for the toughest environments;
  • Ultra durable and lightweight 7075 aluminum main housing and components, 1.41" riser mount with additional lower 1/3 cowitness spacer;
  • Comes standard with seethrough lens covers and hex bolt mount;
  • Complete MilSpec 810G testing, submersible up to 20 meters;
  • Runtime in excess of 100,000 hours with solar and battery usage;
  • Ballistic CircleDot and Ballistic CirclePlex reticle options;
  • Users can select from 4 different integrated reticle options (Dot, CircleDot, Dot with Holds, CircleDot with Holds);
  • Unlimited eye relief to acquire aiming point and target, regardless of eye position behind sight;
  • MOTAC (Motion Activated Illumination) powers up or down when sensing motion;
  • Uses an ultraefficient red LED illumination for daylight visibility and extended runtime;
  • Bolt mount included;
  • Strong, lightweight 7075 Aluminum housing;
  • Waterproof, IPX8 rated, and fogproof

Package Contents:

  • SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount
  • Lens Covers
  • Mount

SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount Orderable Models

List of Orderable Models

SIG SAUER Romeo4T Tactical RDS, Ballistic Circle Dot .5 MOA Reticle, Solar/Side Mount Battery, Hex Bolt Mount & Spacer, SOR43031 , MPN: SOR43031 , UPC: 798681567881 , Code: SD9-RD-SSR4TRD-SOR43031
SIG SAUER Romeo4T Red Dot Sight, Ballistic Circle Dot, Solar, 0.5 MOA Adjustable, Side Battery, Hex Bolt Mount, Spacer, Flat Dark Earth, Medium, SOR43131 , MPN: SOR43131 , UPC: 798681585939 , Code: SD9-RD-SSR4TRD-RMFTS-SOR43131

SIG SAUER Romeo4T Tactical 1x20mm Compact Red Dot Sight w/Mount Unavailable & Discontinued Models

List of Unorderable Models

Demo, SIG SAUER Romeo4T Tactical RDS, Ballistic Circle Plex Reticle, .5 MOA Reticle, Solar/Side Mount Battery,Hex Bolt Mount & Spacer, SOR43032 , MPN: SOR43032-DEMO , Code: SD9-RD-SSR4TRD-SOR43032-DEMO
USED, SIG SAUER Romeo4T Red Dot Sight, Ballistic Circle Dot, Solar, 0.5 MOA Adjustable, Side Battery, Hex Bolt Mount, Spacer, Flat Dark Earth, Medium, SOR43131 , MPN: SOR43131-EDEMO , Code: SD9-RD-SSR4TRD-RMFTS-SOR43131-EDEMO-OB-A
SIG SAUER Romeo4T Tactical RDS, Ballistic Circle Plex Reticle, 1x20 mm, .5 MOA Reticle, Solar/Side Mount Battery,Hex Bolt Mount & Spacer, SOR43032 , MPN: SOR43032 , UPC: 798681567898 , Code: SD9-RD-SSR4TRD-SOR43032
USED, SIG SAUER Romeo4T Tactical RDS, Ballistic Circle Dot .5 MOA Reticle, Solar/Side Mount Battery, Hex Bolt Mount & Spacer, SOR43031 , MPN: SOR43031-EDEMO , Code: SD9-RD-SSR4TRD-SOR43031-EDEMO-OB-C
USED Demo, SIG SAUER Romeo4T Red Dot Sight, Ballistic Circle Dot, Solar, 0.5 MOA Adjustable, Side Battery, Hex Bolt Mount, Spacer, Flat Dark Earth, Medium, SOR43131, EDEMO1, Condition Fair, Other , MPN: SOR43131-DEMO-EDEMO1 , Code: SD9-RD-SSR4TRD-RMFTS-SOR43131-DEMO-EDEMO-OT-D
Demo, SIG SAUER Romeo4T Tactical RDS, Ballistic Circle Dot .5 MOA Reticle, Solar/Side Mount Battery, Hex Bolt Mount & Spacer, SOR43031 , MPN: SOR43031-DEMO , Code: SD9-RD-SSR4TRD-SOR43031-DEMO
Open Box, Dealer Demo, SIG SAUER Romeo4T Red Dot Sight, Ballistic Circle Dot, Solar, 0.5 MOA Adjustable, Side Battery, Hex Bolt Mount, Spacer, Flat Dark Earth, Medium, SOR43131 , MPN: SOR43131-DMO , Code: SD9-RD-SSR4TRD-RMFTS-SOR43131-DMO
Demo, SIG SAUER Romeo4T Red Dot Sight, Ballistic Circle Dot, Solar, 0.5 MOA Adjustable, Side Battery, Hex Bolt Mount, Spacer, Flat Dark Earth, Medium, SOR43131 , MPN: SOR43131-DEMO , Code: SD9-RD-SSR4TRD-RMFTS-SOR43131-DEMO
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