The Trijicon RMR HD is the next generation of RMR, with an adjustable LED that supports both a 1.0 MOA fine dot and a 55 MOA circle reticle. Toggle between them depending on the engagement: fine dot for precision, big circle for close-range fast work. Same RMR footprint as the legacy RMR Type 2 line. Specs: Reticle: 1.0 MOA dot + 55 MOA circle (selectable / overlay) Illumination: adjustable LED, multiple brightness settings + night-vision compatible Housing: 7075-T6 forged aluminum, hardcoat anodized black Footprint: Trijicon RMR (drop-in for existing RMR-cut slides and plates) Battery: CR2032 RMR HD vs RMR Type 2: The HD's killer feature is the dual reticle - most other optics make you choose. The 1 MOA precision capability stays on tap for accurate work; the 55 MOA circle is there when speed matters more. The HD also extends battery life and adds clearer glass over the Type 2 generation.