This detachable AR-15 M16 A2 rear sight assembly is a solid backup sight that fits on all picatinny rails found on DPMS, Colt, and Bushmaster M4, AR-15, and M16 style rifle platforms. The complete A2 sight assembly with dual apertures has windage and elevation adjustment with an integral picatinny mounting deck and fits all Mil-spec AR flat top rifles and pistols. The fixed rear a2 back-up iron sight provides a strong, secure connection to your upper receiver. You can still use your AR-15 upper receiver to mount a Red-Dot/Reflex/Holographic Optic. The fixed rear a2 back-up iron sight is made from high-quality aluminum and steel construction with a Lifetime Limited Warranty.
Fits Any Colt AR15 M4 M16 Standard Flat Top Also ArmaLite, Rock River Arms, Olympic Arms, Bushmaster, DPMS, FN Manufacturing, Knights Armament, Smith and Wesson M&P15, and more