The SPD Micro, from NCSTAR features solar cells that are mounted on top of the reflex sight and will power the red dot whenever there is sufficient sun light on the solar cells. The red dot automatically turns on, when there is sufficient sun light. The optic can also be powered by the onboard CR2032 battery. The side mounted battery compartment allows the changing of the battery without the removal of the optic from the firearm.This reflex sight is compatible with a RMR base and also includes a Picatinny/weaver type rail mount, providing maximum mounting versatility. Mount the optic to your factory RMR machined pistol slide or your custom RMR cut slides. The large digital controls on the left side of the lens housing allow you to control the brightness of the red dot and switch between solar and battery source. A red LED indicator in the center of the digital controls will turn on when the red dot is powered by the battery. Batteries not included.

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