Sig Sauer Romeo 4T Ballistic Circle Plex 0.5MOA - R43032

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Sig Sauer Romeo 4T Ballistic Circle Plex 0.5MOA - R43032


Quick Overview

SKU: 599425
UPC: 798681567898
MFR#: SOR43032
  • Magnification: 1x
  • Objective Diameter: 20mm
  • Reticle: 1MOA Ballistic Circle Plex
  • Click Adjustment: 0.5 MOA
  • Motion Activated: Yes
  • Body Material: CNC 7075 Aluminum
  • Color: Black
  • Eye Relief: Unlimited
  • Waterproof: IPX-8 Rated
  • Fog Proof: Yes
  • Battery: (1) CR2032
  • Battery Life: 100,000 hours
  • Solar Assist: Yes

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The SIG Sauer ROMEO4 is the ultimate red-dot sight when fast, accurate target acquisition is a must. Whether it’s a moving target, dangerous game at full charge, or a fast-breaking tactical situation at close quarters, the ROMEO4 does the job. When things are moving fast and you need to get on target in a hurry, your sight has to work faster. No matter the lighting conditions, weather 
conditions, or terrain, the ROMEO4 red-dot sight has you covered when it counts. You can shoot with confidence with both eyes open, on target yet aware of the situation 
at all times as it unfolds. And because it is a SIG SAUER, you know the ROMEO4 is as tough and dependable as our firearms.



  • Designed for modern semi-automatic 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 co-witness spacer
  • Comes standard with see-through lens covers and hex bolt mount
  • Complete Mil-Spec 810G testing, submersible up to 20 meters
  • Runtime in excess of 100,000 hours with solar and battery usage
  • Ballistic Circle-Dot and Ballistic Circle Plex reticle options
  • Users can select from 4 different integrated reticle options (Dot, Circle-Dot, Dot with Holds, Circle-Dot 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 ultra-efficient red LED illumination for daylight visibility and extended runtime
  • Bolt mount included
  • Strong, lightweight 7075 Aluminum housing
  • Waterproof, IPX-8 rated, and fog-proof.


For the best selection of SIG Sauer Optics at the best prices, shop Palmetto State Armory!

SKU: 599425
SKU 599425
Department Knives Optics Flashlights
Brand Sig Sauer
Daily Deal No
Daily Deal Expires No
Unit Price No
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Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 599425

Questions and Answers

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How many brightness settings, and will it function in daylight without a battery?
Logger John on May 10, 2019


4.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Tough off-road Cadillac!
You can’t get a better field of view than both eyes open. You can’t get a system that lights up faster than just picking it up. I own 4t’s and 6t’s with never a hint of a problem. All hold zero and are tough. If you have trouble picking up a dot fast the + reticle is much easier for some folks. I am spoiled to the t series Romeo sights now and have replaced my aimpoints and Eotechs. I really believe you will be more than satisfied with the 4t or 6t no mater what you have used in the past. The 4t low mount is an exact cowitness on PSA’s AK-P and makes a must have pair.
April 26, 2019
Not worth the money vs it's competitors
The reticle selections are nice, but I'm not a fan of the + central icon. The FOV is too narrow for the other reticle options as well. If this optic was 25mm like the MRO it might be decent. There is just no reason to choose this over the MRO, eotech or holosun offerings. I "might" take it over the Aimpoint T or H models as a micro sight just due to cost.
April 16, 2019