The Trijicon SRO Red Dot Sight (SKU SRO3-C-2500003) — SRO stands for Specialized Reflex Optic — is a 1× open-emitter competition red dot sight with a 5.0 MOA adjustable-LED red dot, a tall round sight window, a top-loading CR2032 tray and the Trijicon RMR footprint, in a forged aluminium housing in Black.
The SRO exists because a small, square window slows you down. Its near-circular window gives far more vertical viewing area than a typical mini reflex sight, so the dot is quick to find on the draw and easy to keep in view through a fast string. Underneath it is the same duty-grade Trijicon engineering as the RMR — forged aluminium, waterproof, holding zero — with the battery moved to a top-loading tray so a cell change never costs you your zero.
Finish: Black — this dot size is also stocked as the Trijicon SRO red dot sight in Coyote Brown.
How It Compares
Want a finer dot? The SRO 1.0 MOA red dot sight is the precision option and the SRO 2.5 MOA red dot sight is the balanced choice. Want a lower-profile sight for a rifle or a carry-weight build? The Trijicon RMR Type 2 red dot sight shares the SRO's footprint in a smaller package, and the Trijicon RMR HD red dot sight adds a 55 MOA circle-dot reticle. Browse every optic on the RMR footprint, the Trijicon RMR and SRO range and the adapter plates that fit them, or read our Trijicon buyer's guide.
Ideal For
- Practical shotgun and 3-Gun stages, where the bold dot is quickest through a transition
- Airsoft gas blowback race builds where dot pickup on the draw decides the stage
- Section 1 long-barrelled pistols and licensed revolvers cut for the RMR footprint
- Pistol calibre carbines shot close and fast
Key Features
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Reticle: 5.0 MOA adjustable-LED red dot — about 5.2 in (133 mm) at 100 yards
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Window: Tall, near-circular sight window for a large field of view and fast dot pickup
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Illumination: Adjustable LED, from daylight-bright down to night vision settings
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Power: One CR2032 coin cell in a top-loading tray — change it without unmounting the sight
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Footprint: Trijicon RMR footprint — the same pattern as the RMR Type 2
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Housing: Forged aluminium, waterproof, finished in Black
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Origin: Made in USA
Technical Specifications
| Optic Type |
Open emitter competition red dot sight |
| Magnification |
1× (non-magnifying) |
| Reticle |
5.0 MOA dot, red |
| Illumination |
Adjustable LED, daylight and night vision settings |
| Battery |
One CR2032 coin cell, top-loading tray |
| Footprint |
Trijicon RMR footprint |
| Window |
Tall round window |
| Housing |
Forged aluminium |
| Finish |
Black |
| Water Resistance |
Waterproof |
| Country of Origin |
Made in USA |
| SKU / MPN / UPC |
SRO3-C-2500003 / SRO3-C-2500003 / 719307615793 |
What's Included
- Trijicon SRO red dot sight (SRO3-C-2500003)
- CR2032 battery
- Mounting hardware
- User manual
Warranty
Covered by Trijicon's manufacturer's warranty. Keep your order confirmation as proof of purchase and register the optic with Trijicon after fitting; we handle warranty claims for you from the UK.
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Trijicon's warranty.
Frequently Asked Questions
Is the Trijicon SRO the same footprint as the Trijicon RMR?
Yes — the Trijicon SRO uses the Trijicon RMR mounting footprint, so it fits any slide cut or adapter plate machined for an RMR. The SRO differs from the RMR Type 2 red dot sight in its taller round window and its top-loading battery, not in how it mounts.
Will the Trijicon SRO fit a Glock MOS, Springfield OSP or Walther PDP?
The SRO uses the RMR footprint, so it fits Glock MOS, Springfield OSP and Prodigy, Walther PDP and H&K VP9 optics-ready slides with the correct RMR adapter plate, and it fits directly on any slide milled for an RMR. Our Trijicon RMR footprint mounting kit (AC32064) supplies that plate and hardware; slide cuts vary between production runs, so confirm your pistol's cut before ordering.
Can I change the SRO battery without removing the optic?
Yes — the Trijicon SRO takes a single CR2032 in a top-loading tray, so the cell swaps from above without unmounting the sight and without losing your zero.
Why choose the 5.0 MOA SRO?
A 5.0 MOA dot covers about 5.2 in (133 mm) at 100 yards, which makes it the fastest of the three SRO dot sizes for close-range speed shooting. Our red dot size chart compares all three SRO dot sizes.
Can the Trijicon SRO be mounted on a rifle?
Yes — because the SRO uses the RMR footprint it fits Trijicon's RMR rail mounts, so the RM33 low Picatinny mount (AC32004) or the RM34 tall Picatinny mount (AC32005) will put it on any Picatinny rail.
