The HS507K-X2 is an open reflex optical sight designed for concealed carry pistol applications. The X2 Series pistol optics features Lock Mode, when activated, locks the buttons preventing inadvertent setting changes; buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way; Holosun's Super LED; 50k hours battery life, Multi-Reticle System and Shake Awake. Includes multi-tool, lens cloth and user manual.