The Trijicon RMR HD with the 3.25 MOA dot - same dual-reticle technology as the 1.0 MOA HD variant, but with the mid-size dot most carry shooters prefer. The 55 MOA circle is selectable as a secondary aiming aid for fast close-range work; the 3.25 dot covers everything else. Specs: Reticle: 3.25 MOA dot + 55 MOA circle (selectable / overlay) Illumination: adjustable LED, multiple brightness + night-vision compatible Housing: 7075-T6 aluminum, hardcoat anodized black Footprint: Trijicon RMR (drop-in) Battery: CR2032 The 3.25 + 55 MOA combo: This is arguably the most useful RMR HD configuration. The 3.25 dot is the carry/duty standard, and the 55 MOA circle gives you a "use the circle, find the dot" startup - fast-acquire with the circle, refine with the dot. Single optic, two aiming pictures.