Popular handgun red dot sights measured and listed

Here are a few popular optics we measured for a size comparison to the new Aimpoint COA. Using calipers, we measured what we perceived as the actual window size, not what the manufacturer puts as the window size on technical data sheets. This measurement can be subjective based on light conditions and eye sight.

• Aimpoint COA - Glock 47 slide - Width .652” x Height .622”
• Aimpoint ACRO P2 - Glock 19 slide - Width .613” x Height .595”
• Trijicon RMR HD - Glock 47 slide - Width .833” x Height .582”
• Trijicon RMR06 (type 2) - Glock 19 slide - Width .782 x Height .509”
• Trijicon SRO - Glock 47 slide - Width .911” x Height .785”
• Holosun EPS Carry - Glock 43x slide - Width .733” x Height .515” 

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