The HE507K-GR X2 is an open reflex optical sight designed for concealed carry pistol applications. The sight has 10 daylight settings and 2 night vision brightness settings with a green 2 MOA dot and 32 MOA circle and is parallax-free. The X2 Series pistol optics feature two improvements the Lock Mode, when activated, locks the buttons preventing inadvertent setting changes and second the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Additional features include Holosun's Super Green LED with up to 50k hours battery life, Multi-Reticle System, Shake Awake and is parallax-free. Package includes multi tool, user manual and lens cloth.