The DI Optical RV2 is an extremely durable 30mm red dot reflex optic. It exceeds MIL-STD 810G standards for waterproofing, shock resistance and exposure to adverse climate conditions. It provides exceptional clarity in low light conditions as well as an extra wide field of view. It features unlimited eye relief, night vision compatibility, push button controls, submersible up to 30 feet and it comes with an Arms 17 mount DI Optical RV2-17 RV2 with Arms 17 Mount