45° Canted Front and Rear Combat Sights with Integrated Sighting System- FR12Apertures and upper housing for faster target acquisition & centering Fit any standard picatinny rail A simple button press and the sights swing out and flip up, giving you a nice 45 canted sight picture Windage adjustments are deliberate and easy to detect, and the locking pin for the elevation post ensure no movement low profile, when not flipped up, the sights fold flat against the picatinny rail on the top of your standard AR, easily fitting under