First Look: SIG Sauer Romeo M17 Red Dot Sight

A closed-emitter dot sight for mil-spec M17 and M18 pistols.

posted on May 10, 2023
Sig Sauer Romeo M7

SIG Sauer Electro Optics is introducing the new Romeo-M17 slide mounted electronic reflex (red dot) sight. This new fully sealed, enclosed-emitter reflex sight was designed from the ground up to be compatible with the U.S. Military’s MHS (Modular Handgun System) M17 and M18 service pistols. In addition to this, the sight is also compatible with both M17/M18 surplus pistols and commemorative editions that have a single hole on the slide used to secure and fasten the appropriate mounting plate. Currently, the new Romeo M17 enclosed reflex sight does not fit standard commercial P320 slides, commercial M17 and commercial M18 pistol slides. The compatible variants for these are on the way, and will be released in the near future. 

The SIG Sauer Electro Optics Romeo-M17 is mil-spec, fully enclosed and gas purged red dot reflex sights with distortion-free aspheric lens. It can be submerged to depths as low as 35 meters (115 feet). The Romeo M17’s housing is machined from 7075 aluminum and also has built in anti-reflection grooves on the rear of the housing to reduce glare and interference from light. 

“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."

Please visit for more information on this sight and other products from SIG Sauer.


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