Holosun’s new SCS-MOS is a direct attachment optic for full-size Glock MOS systems offering the lowest profile deck height for use with standard height iron sights. The SCSMOS combines solar power, rechargeable internal power storage, low battery level indicator, and an auto adjusting reticle brightness system with override (temporarily sets SCS to setting 9 of 12) to potentially operate indefinitely in multiple lighting conditions.