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SIG SAUER Electro-Optics is proud to introduce the ROMEO-M17 pistol mounted red dot sight. Developed from the ground up for the U.S. Army’s Modular Handgun System to be the ultimate in performance, reliability and durability. The ROMEO-M17 is designed specifically to fit U.S. Military Modular Handgun System M17/M18 pistols, M17/M18 Commemorative Special Editions and M17/M18 Surplus pistols with a single hole in the slide to secure the sight plate.

It does not fit standard P320 or commercial P320-M17/M18 slides. Commercial variations of compatible pistols and slides will be available in the coming months.

“The fully sealed ROMEO-M17 is the next revolution in red dot optics; it answers the call to withstand the rigors of the battlefield and works seamlessly with the U.S. Army’s Modular Handgun System,” said Andy York, President, SIG SAUER Electro-Optics. “The ROMEO-M17 is the first red dot sight to incorporate SIG SAUER’s patent pending SIG-LOC mounting system. SIG-LOC (Leveraged Optimized Connection) features a new proprietary bottom-mount technology that has multiple interface features between the pistol slide and the optic that provides for an extremely strong and robust lock-up.

This new mounting system, when combined with the side mounted battery on the ROMEO-M17, allows the optic to have an extremely low position when mounted to the slide, giving the user a full sight picture and co-witness with the existing standard-height iron sights.  This sight was engineered, tested, and built in Oregon to be the ultimate aiming solution for the MHS pistols.”

The SIG SAUER Electro-Optics ROMEO-M17 is a mil-spec, fully enclosed and gas-purged red dot reflex sight with a distortion-free glass aspheric lens, and is submersible to depths up to 35 meters.  Other features include a new and very robust flexure-arm adjustment system made of the same Beryllium Copper found in many riflescope designs, and a housing that is forged and machined from 7075 Aluminum with an integrated loaded chamber indicator (LCI) gas deflector and machined anti-reflection grooves on all rear facing surfaces for reduced glare.
The optic incorporates a high-efficiency point source red LED emitter, with 2 MOA dot/32 MOA circle reticle, independent brightness adjustment buttons, 15 brightness settings including night vision settings, and a side-mounted CR2032 battery compartment with a threaded battery cap so the optic does not need to be removed from the pistol for battery changes.  The ROMEO-M17 has a minimum continuous runtime of 50,000 hours at medium brightness setting, and utilizes MOTAC (Motion Activated Illumination), MAGNETAC (Magnetic Activation), and D.A.R.C (Dark Adaptive Reticles & Coatings) technologies.
“The ROMEO-M17 is the pinnacle of pistol-mounted red dot optics, and we are immensely proud that it has been tested and selected to receive a NATO Stock Number (NSN) from the U.S. Army so this innovative technology and ruggedized performance is easily attainable and available to our warfighters,” concluded York.
The SIG SAUER Electro-Optics ROMEO-M17 is designed, developed, tested and fully assembled in the U.S.A.
ROMEO-M17 Specs:
Objective Lens Diameter: 24mm
Reticle: Circle dot with 2 MOA Red Dot / 32 MOA Circle
Lens Type: Asphere
Brightness Adjustment Settings: 15 (12 Day / 3 Night Vision)
Water Resistance: Submersible to 35 meters (115 feet)
Overall Length: 2.4 inches
Overall Width: 0.9 inches
Overall Height: 1.1 inches
Mounting Footprint: SIG-LOC™ MHS
Battery Type: CR2032
Battery Location: Side
Weight (w/o battery): 1.5 ounces
For more information about the SIG SAUER Electro-Optics ROMEO-M17 or watch the product video please visit

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  1. The giverment puts tiny cameras in all the red dot sights so they can see what your shuting. Use At Your Own Risk

  2. I keep hearing that the commercial version will be coming soon but never how soon! Does that mean 6 months, one year — do I need to buy a Romeo 2 instead because it will be a year or better before we see this on the commercial market?

    • LOL don’t worry one day you can save up and afford that Mosin or AK for your fantasies of revolution.

  3. Isn’t the purpose of enclosed emitters is to keep stuff (rain, debris. etc.) from obscuring your view through the sight or blocking the emitter? If that is true, why is the front lense recessed and the rear lense buried behind rear buttress arms making it very difficult (if not practically impossible) to wipe the occluded lense clean with your fingertip? Gloved fingertips are even more problematic. Pistol red dots are very tiny to begin with and recessing the lenses complicates life in the real world.

  4. Instead of working overtime on the many configurations and accessories for the P320, why doesn’t Sig focus on making it reliable first? Reliability is priority number one for a defensive gun. Check out Honest Outlaw reviews. He put lots of rounds through his, and it had multiple failures.

  5. Would it kill Sig to use the same slide on the civilian M17/18s as the military version? It would solve a lot of those compatibility issues.

  6. While I certainly don’t like the looks of it and feel it’s rather ugly — and I like my firearms on the pretty side just like my women — I still want one because it co-witnesses WITHOUT suppressor height sights AND has the option of the circle dot!


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