SIG Sauer ROMEO4M 2 MOA Red Dot Sight

Manufactured by Sig Sauer
SKU: SOR41301
MPN: SOR41301
Manufactured by Sig Sauer
3 Reviews
$233.99 $234.77

Out of Stock

NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.



The Sig Sauer Romeo 4M is more than just a red dot sight. It is a component you can trust your life with, whether you are facing a charging animal on a dangerous hunt or using on your home defense weapon. This compact red dot sight is packed full of features that place it well above the competition. It features a dual reticle system, so you can choose between a 2 MOA dot or a 2 MOA dot with a 65 MOA circle depending on your preference. With zero parallax and unlimited eye relief, you will be able to quickly acquire targets when you raise your rifle. The Romeo red dot sight also features the MOTAC Motion Activated Illumination System that immediately turns the optic on when it detects movement. This helps to save on battery when not in use and allows you to have your optic ready to go without needing to take the time to turn it on. Perfect for home defense situations when you can’t spare a second. This technology combined with the 5,000 hour battery life ensures that your electro-optic will always be ready to work.

  • Unlimited eye relief
  • Zero parallax
  • Dual reticle system
  • 2 MOA dot or dot with 65 MOA circle
  • 10 daytime settings with 2 night vision settings
  • .5 MOA adjustments
  • Durable protected turrets and battery compartment
  • IPX-8 water and fog proof
  • MOTAC motion activated illumination system
  • Strong and lightweight aluminum housing
  • 5,000 hour battery life on single CR2032 battery
  • Backed by the SIG Sauer Electro-Optic Infinite Guarantee
  • Includes high and low picatinny mount

The Sig Sauer Romeo 4M runs on a single CR2032 battery and can be changed out in seconds because of the side mounted battery compartment. This Sig red dot sight is rated IPX-8 waterproof and fog proof which means it can be submerged under water greater than three feet and still function. With a CNC machined aluminum body, this optic is extremely durable and can withstand multiple impacts without losing zero. The grey coating and trapezoidal surface design help to break up light and prevent reflections that can give away your position. The objective is also Mil-Spec coated to ensure optimal light transmission and is designed to reduce reflective glare that can also give away your position.

This red dot sight is the perfect for your AR-15 or similar rifle and it even comes with two picatinny mounts, so you can attach it directly to your rifle right out of the box. With one high mount and one low mount, you can run it as low as possible or with iron sights. Pair this red dot sight with a magnifier and you have yourself an extremely capable set up for target shooting, home defense, or hunting.

SIG Sauer is a world-renowned firearms manufacturer with a rich history of innovation and design leadership. No other firearms manufacturer is so highly regarded and so universally respected for the quality, reliability, and safety of its products. Since 1864 they have expanded their product line to include suppressors, optics, ammo, and airguns to provide customers with a greater range of firearms and equipment.
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Battery Life5000 Hours
Battery TypeCR2032 3V Lithium Coin
BrandSig Sauer
Brightness12 Settings
Click Value1/2 MOA
FinishHardcoat Anodized
Night Vision CompatibleNight Vision Compatible
Reticle65 MOA Circle 2 MOA Dot
Reticle ColorRed
Weight5.4 Oz

WARNING: This Product can expose you to chemicals which is known to state of california to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews

  • 3 stars
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  • 2 stars
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  • 1 star
  • 0 reviews

Great red dot with an excellent reticle

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I purchased this for a clone build of a Federal agency upper. I understand that the 4M was used for a couple of years as an approved optic, so I picked this up and was not dissapointed. The dot is very crisp, and the Eotech type reticle is great. The brightness can be turned way down to what almost seems like a faint dot that is maybe one moa, all the way up to very bright. The controls are very distinct in feel, and the lens caps work well. I don't know how the front lens cap works with the kill flash though, so I left the kill flash off. It is also a long sight on the rail, longer than my Primary Arms push button micro dot with mount, so I was able to mount a buis, but not a buis and magnifier.Also It is a absolute cowitness mount. I am really impressed, compared to a other red dot optics I have this is a great value and seems on par with the higher end stuff.<br>It is really nice being able to switch between the circle dot and dot, it is really great to be able to do that.

Good value!


Have this unit in a 300 BLK SBR and like it a lot. Dot is clear, and the reticle options are nice. Minor complaint is that you can't use the front cap if you're using the kill-flash, so it's either one or the other. On the bad side, the mounting screw is rather weak and easy to break. Already got a replacement screw from Sig Sauer.
<br>Plus: Crisp dot, controls, reticle options, killflash included
<br>Minus: mutually exclusive killflash and front lens cover, weak mounting screw
<br>Overall, a very good optic for the price!

Great Value

by -

These are great red dots. The redical is fantastic and provides a lot of flexibility. For the money this is a great value.