The Mepro 21 is a maintenance-free, dual illuminated, red dot reflex sight especially designed for quick and instinctive accurate shooting. Originally developed for the IDF, this advanced optical sight is great while on the move in close quarters where the use of both eyes is critical. The Mepro 21 provides instant, all light aiming without batteries, and can work in tandem with a magnifying scope. Adapters are available for all the common mounts (Weaver or Picatinny rails, M16 carry handle, NATO, etc).