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Sig Sauer ROMEO2 1x30mm 6 MOA Modular Reflex Sight w/Half and Full Shrouds SOR21600

SKU SOR21600-Sig

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New for 2022, Sig Sauer’s ROMEO2 Micro Reflex Sight delivers next-level versatility in a compact package. It ship with two interchangeable steel shrouds: a half shroud and a full shroud. The half shroud provides good protection against drops and minor impacts and the full shroud completely seals in the optic with a polycarbonate rear window for superior protection against dirt, water, dust, and other debris. Alternatively, the user can use the ROMEO2 without the shroud to save a little weight and use the optic as a standard open red dot. The ROMEO2 also features Sig’s exclusive MOTAC and MAGNETAC activation systems. MOTAC (Motion Activated Illumination System) powers up the optic when motion is detected, and MAGNETAC (Magnetic Activation) powers up the optic when the host weapon is drawn from a compatible holster, and shuts the optic off when holstered. Together, these systems ensure the ROMEO2 is always ready for use. Other features of the ROMEO2 include 15 levels of illumination (12 daytime, 3 night vision) and D.A.R.C. (Dark Adaptive Reticles & Coatings) – a technology that delivers optimal target clarity and ideal reticle brightness when used with Gen 3+ night vision devices. In addition, the ROMEO2 is compatible with any Sig Sauer pistol outfitted with a Pro-Cut slide and a spring-loaded side battery tray allowing the battery to be changed without having to detach the optic from the host weapon.

Features of the ROMEO2 Micro Reflex Sight:

  • 2 steel shrouds: 1 half shroud (for minor drop and impact protection) and 1 full shroud (includes polycarbonate rear window to completely seal in the optic for protection against dirt, water, dust, and other debris)
  • MOTAC (Motion Activated Illumination System) powers up optic when motion is detected
  • MAGNETAC (Magnetic Activation) powers up the optic when the host weapon is drawn from a compatible holster, and shuts the optic off when holstered
  • D.A.R.C. (Dark Adaptive Reticles & Coatings) delivers optimal target clarity and ideal reticle brightness when used with Gen 3+ night vision devices
  • 15 illumination levels (12 daytime, 3 night vision)
  • Compatible with any Sig Sauer pistol outfitted with a Pro-Cut slide
  • Spring-loaded side battery tray
  • Integrated rear sight for co-witnessing


  • Magnification Range:1x
  • Reticle Details6 MOA Dot
  • Objective Lens Diameter:30mm
  • Dimensions:Length: 1.84"
    Height: 1.12" (without shrouds)
    Width: 1.32"
  • BatteryCR2032
  • Battery TypeCR2032
  • Night Vision CompatibleYes
  • Product TypeReflex Sight/Red Dot
  • Item ConditionNew
  • UPC798681647705
  • MPNSOR21600

Customer Reviews

Average Rating
September 4, 2022

Great sight, crisp dot. It’s a lower profile without shrouds for carry use, but I have the full shroud ser up for it and have had a good experience with it. I have the 6 MOA version and it has taken a few drops through range/duty use. You receive a cardboard box with Sig/Romeo 2 on the top and sides, and inside you’ll find the Romeo 2, its shrouds, a polycarbonate lens, a lens pen, 2 mounting screws, 2 LCI shields, and 4 T6 screws. There is other documentation and a manual. Please read the manual. I shouldn’t have to say that but you’d be suprised!! Don’t listen to the other reviewer using an electric gauge for such tiny screws, just screw them hand-tight or right when you start feeling resistance and you’ll be good to go. The box also comes with loctite, which will give you more peace of mind about those little T6 screws backing out. Used this on my P320 M18 and have not had them back out after 2k rounds. Have swapped it back and forth between fullsize, compact, and carry slides. I’d recommend waiting til its back in stock here than to buy direct from Sig, they have listed them for over 800!! Not worth that much. ~550 is a great price for what you get, seriously. Go ahead and watch Sage Dynamic’s burndown test of this sight too, you won’t be disappointed, and neither am I. I would recommend this over a Deltapoint Pro and Romeo 1 Pro any day.

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August 10, 2022

The sight its self is very nice and solid construction. The main issue I had was with the shroud screws. They are very tiny and I was concerned about stripping them or breaking them before I even began mounting the shroud to the optic. When I began mounting the shroud screws to the sight I used an electronic torque gauge to ensure I would never exceed the 6lbs limit of the screws. Well, I made to about half way at 3lbs showing on the gauge when the screw broke in half making it impossible to mount and/or remove the broken screw inside of the sight. I have mounted many sights and other items requiring torque specs. There was no binding to indicate there was an issue or over torquing. This may just be a me issues but, I caution you when mounting the screws. Now I have an open emitter sight $200.00 more than an RMR or DPP. I would spend the same money on the ACRO P2 if you can get it. I admit the sight is nice and the concept is very cool. Just mad that my $600.00 optic is no longer able to use a shroud and cannot return or probably sell.

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November 10, 2023

Sight is just what I was looking for, as far as the torque wrench , the torque bit didn’t fit the torque screws very well. Had to use the set I had . Thats my only complaint.

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January 27, 2023

Excellent optic, clarity and dot are perfect. Built like a tank with or without the shroud. Brand new out of the box I mounted it and assembled in full containment mode, looks great and the sight window is huge and clear, much improved over my trijicon. The Romeo2 comes with a nice torque wrench and instructions. Be careful not to over torque anything. This thing is the real deal and I 100% recommend this pistol sight, even though it's expensive it will likely last a lifetime of hard use.

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