Foldable 45 Degree Fiber Optics Iron Sights Offset Front and Rear Sight PolymerFeatures One push quick transition between upright and folding positions Low profile sights with 45 degree orientation, no interference with primary optics laser sight Diamond shaped A2 style aperture, allowing for quick and accurate target acquisition Dual rear sight apertures Fiber optics front red dot and rear green dots provide quick low profile aiming in low light conditions Compatible with most Picatinny Weaver rails. Dural and light weight