The Holosun HE510C Elite Reflex Sight delivers rapid target acquisition with its crisp green reticle and ultra-wide sight picture. Featuring solar backup and Shake Awake technology, this rugged optic ensures consistent performance in any environment. 2 MOA green dot with 65 MOA circle reticle Multi-Reticle System (MRS) with three reticle options 12 brightness settings (10 daylight, 2 night vision) Solar Failsafe and CR2032 battery for dual power supply Shake Awake technology extends battery life Titanium-alloyed protective hood for durability Parallax-free design with unlimited eye relief Quick-release Picatinny mount for easy installation