The Trijicon SRO (Specialized Reflex Optic) is an American red dot sight designed by Trijicon, Inc., specifically developed for competitive shooting and sport shooting on handguns. Launched in 2019, it stands out for its exceptionally wide aiming window, offering 59% more optical area compared to the famous Trijicon RMR, making it a go-to reference for competitive shooters looking for fast target transitions and optimal visual comfort.
History and Development of the Trijicon SRO
Trijicon, Inc., an American company based in Wixom, Michigan, has been recognized worldwide for its innovative sighting systems since its founding in 1981 by Glyn Bindon. After the considerable success of the RMR (Ruggedized Miniature Reflex) launched in 2009, which became the reference for miniature sights for tactical use and law enforcement, Trijicon identified a specific need: competitive shooters were asking for a larger aiming window to facilitate rapid acquisition of the point during transitions between multiple targets.
The development of the SRO began in the mid-2010s, with the goal of creating a sight optimized for athletic performance rather than extreme tactical toughness. Officially unveiled at the 2019 SHOT Show, the SRO immediately appealed to the shooting sport community with its competition-centric design. Unlike the RMR, whose angled V-shaped housing was designed to deflect impacts, the SRO adopts a more open profile with a wide circular lens, prioritizing field of vision over resistance to extreme impacts.
Technical Specifications
| Feature | Specification |
|---|---|
| Official designation | Trijicon SRO (Specialized Reflex Optic) |
| Country of Origin | United States |
| Manufacturer | Trijicon, Inc. (Wixom, Michigan) |
| Launch year | 2019 |
| Lens Type | LED Red Dot Reflex Viewfinder |
| 1x magnification | |
| Lens dimensions | 25 × 22.5 mm (circular window) |
| Overall dimensions | 55 × 32 × 34 mm |
| Weight (with battery) | 46 g (1.6 oz) |
| Reticle Options | 1.0 MOA / 2.5 MOA / 5.0 MOA Red Dot |
| 8 brightness levels | (including 1 super bright + 2 night vision) |
| Power Supply | CR2032 Battery (Top Loading) |
| Battery life | 3 years (setting 4 out of 8) |
| Case Material | Forged 7075-T6 Aluminum, Matte Black Finish |
| Submersible water resistance | up to 3 meters |
| Mounting base | compatible with Trijicon RMR footprint |
Operation and Technical Particularities
The Trijicon SRO uses an LED diode to project a red dot onto a multi-coated lens, providing a clear, distortion-free image. The system is completely parallax-free, allowing the shooter to aim with both eyes open without loss of accuracy, regardless of the position of the eye in relation to the optics. The 25 × 22.5 mm viewing window represents a usable area of 0.98 × 0.89 inches, which is 59% more than the RMR, which is the main advantage of the SRO for competition.
The CR2032 battery is charged from the top of the body, without the need to remove the viewfinder or lose the zero setting. Windage and elevation adjustments are made in 1 MOA increments via screws accessible from above, without any special tools. The SRO is compatible with suppressor height sights, allowing co-witnessing with the original sight sight and front sight when mounted on a suitable frame.
Variants and Versions
The Trijicon SRO is available in three reticle configurations suitable for different shooting disciplines. The 1.0 MOA model (SRO1-C) is preferred by snipers looking for a fine point for exact placement. The 2.5 MOA (SRO2-C) model is the best compromise between accuracy and fast acquisition, making it the most popular choice. The 5.0 MOA model (SRO3-C) provides the most visible point for ultra-fast acquisition, ideal for IPSC/USPSA dynamic shooting. Each model is available in black or Coyote Brown finish, and all share the same mounting footprint compatible with RMR turntables, ensuring broad compatibility with pre-machined guns.
Sports and Competition Use
The Trijicon SRO has established itself as one of the reference sights in sport shooting disciplines, including the USPSA (United States Practical Shooting Association), IPSC and Steel Challenge. Its generous aiming window allows for significantly faster target transitions than small-window sights, a decisive advantage in timed competition. Many professional shooters and national champions have adopted the SRO for their competition weapons, contributing to its reputation in the sports community. The sight is also popular for recreational shooting and plinking thanks to its extended comfort of use.
Civil Possession in Switzerland
In Switzerland, the Trijicon SRO is freely available for purchase as an optical accessory. Red dot sights are not subject to the Federal Weapons Act (Arms Act) and do not require an acquisition permit. They can be purchased from specialist gunsmiths or ordered online without any particular restrictions. However, mounting on a handgun remains subject to the usual regulations on the possession and carrying of weapons in Switzerland. The SRO is distributed in French-speaking Switzerland by several specialist retailers and represents an investment of around CHF 500 to CHF 650 depending on the model and retailer.
Conclusion
The Trijicon SRO represents the culmination of the Trijicon philosophy applied to sport shooting: a high-quality optics, built with premium materials, offering an unrivalled aiming window in its class. While it is not designed for the rigors of military or police service like the RMR, it excels in its chosen field — competition and sport shooting. Its wide adoption by competitive shooters and compatibility with the RMR footprint make it a preferred choice for anyone who wants to maximize their performance on the shooting range.
