Bushnell AR Optics First Strike HiRise Red Dot Riflescope with Riser Block
http://www.amazon.com/gp/product/B00AU6E6RC?tag=sukses2015-20
5 MOA Red Dot reticle
Allows proper mounting height on AR-15 flat top and is an integral base for WeaverPicatinny rails
Conserves battery life by self regulating brightness based on available light and power down when the protective storage hood is attached
Fully waterproof and shockproof with matte finish
Supplied riser block positions the sight at optimum height on AR-15 flat tops or tactical shotguns