C&H Precision Echelon Optics Base Plate adapts Springfield Echelon pistol platforms to accept Holosun 407K/507K and C&H EDC (RMSC) footprint red dot optics. Machined from aluminum and stainless steel with a hard anodized black finish, this red dot optic mount provides a precise, low-profile foundation for mounting compact reflex sights. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.