BlackHawk Folding Rear Back-Up Iron Sight, Olive Drab

This back up iron sight (BUIS) from BLACKHAWK! is made from durable steel, and is perfect for running behind a Red dot Reflex sight or magnifying scope The lightweight design won't weigh down your rifle, but it's ready to be flipped up at a moments notice if your primary optic goes down Works best on rifles, but will function on any rifle capable of using sights