The Osight K Red Dot Sight delivers the ultimate in speed and simplicity for full-sized and compact handguns. The 6 MOA dot provides quicker target acquisition and ideal visibility for self-defense and high-stress situations. Adaptive auto-brightness technology adjusts the dot to match ambient light conditions to give you the right dot for any time of day. 8 daylight and 2 night-vision manual brightness settings give you more options if you prefer to control brightness yourself. The Osight K Reflex Sight also features motion sensor technology that brings the unit to life at the slightest movement and shuts it down after 3 minutes of inactivity. Low-power indication lets you know when the battery is in need of replacement. Battery swaps are incredibly simple thanks to the flush-fitting, side-loading battery tray. The unit is made from rugged 7075 aircraft aluminum for durability. Fits Shield RMSc footprints. Includes CR1620 battery, adjustment tool, cleaning cloth, and mounting hardware. 6 MOA red dot provides fast target acquisition Auto-brightness automatically adjusts reticle to match light conditions 8 daylight and 2 night-vision manual brightness settings Motion sensor technology brings the unit to life with slight movement Low-power indication Flush-fitting, side-loading battery tray for easy battery swaps Rugged 7075 aircraft aluminum construction Fits Shield RMSc footprints