The HWS EXPS3 is an excellent choice for professionals. The EXPS3 offers true two eyes open shooting for fast target acquisition, night vision compatible settings, and a 7mm raised quick detach base for lower 1/3 iron sight co-witness. It features easy-to-adjust side buttons and an adjustable, locking, quick-detach lever for easy attachment and removal. It's night vision-compatibility makes it a versatile choice for day or night hunting. Night vision capable for Gen I-III+ devices. Features Auto Shut Down at 8 hours. Includes: CR123 Battery, 7mm Riser, and Mounting Hardware.