The Holosun HE403B features a 2 MOA dot, a 50K hour battery life from a 2032 battery, and shake awake technology for unrelenting reliability on your duty, sporting, or home defense firearm. With 12 brightness settings, 10 daylight and 2 night-vision, the H403B-GR green dot can be matched to almost any lighting situation or environment with the press of a button. When not is service, the HE403B-GR has a sleep mode which is instantly deactivated with the Shake Awake feature. This automatically returns the dot to the previous setting.
With digital buttons for setting changes, Shake Awake, and rubber lens covers you can get up to 50K hours of service without changing the battery. An easy access battery tray ensures that you maintain your zero when the battery does need replacing. Super LED technology provides a versatile range of reticle intensity settings from night vision-compatible to daylight bright.
Machined from 6061-T6 aluminum, with an anodized finish, and a IP67 rating the HE403B-GR sight is designed for the rigors of hard duty use.