The Trijicon SRO with 1.0 MOA dot is the precision variant of the Specialized Reflex Optic. The SRO's wider open window makes target acquisition faster than an RMR while the small dot keeps shot placement precise. Built for pistols but works on rifles too.

Specs:

• Reticle: 1.0 MOA red dot
• Window: 22.5mm round (wider than the RMR's 17mm)
• Illumination: 8 brightness + 2 night-vision compatible (manual)
• Housing: 7075-T6 forged aluminum, hardcoat anodized matte black
• Adjustment: 1 MOA windage and elevation
• Battery: CR2032, top-loading (no need to dismount to change)
• Battery life: up to 3 years at brightness setting 4
• Weight: 1.4 oz
• Footprint: Trijicon RMR — compatible with RMR-cut slides and plates
• Waterproof: submersible to 10 feet

SRO 1 MOA use case: Competitive shooters who want the SRO's wider window for fast acquisition AND a fine dot for precision drills. If you want big-and-fast, go to the SRO 5.0 MOA instead.