Optics Ready plates for the CZ Shadow 2 Compact let you mount a red dot in the Optics Ready cut of the slide. The Shadow 2 Compact uses the same plates as the Shadow 2 OR and Shadow 2 Orange OR. You choose the plate by the footprint of your red dot, for example Trijicon RMR, Shield RMSc, Holosun K-series, Leupold DPP, Docter, C-More RTS or Aimpoint Acro. You can choose plates from CZ, Eemann Tech, Evo Arms, Impact Machine, Toni System, 2BME and Outer Impact. The Vector Optics Frenzy 1x20x24 fits the Shadow 2 Compact without a plate.