Flip-up reserve sights employ unique diamond shape that gives specific reference points to help your eye instantly center the target in the sights. Clamps to securely Picatinny rail, with a locking system that ensures sights stay up securely and remain zeroed. When not in use, sights fold down with the push of a button Front sight has angled ears protect the A2-type post and serve as visual reference point. Rear sight offers dual same-plane short and long-range apertures, horizontal white reference marks, and ½ MOA windage adjustments. Folds and deploys with either aperture active.