The Elcan Auxiliary Picatinny Rail Mount Kit is a must-have addition to any AR-15 equipped with an Elcan SpecterDR optic. This rail segment is purpose-built to allow for the attachment of a micro red-dot optic to the side of the larger sight, enabling users to have an intuitive optic for close-range engagement. The rail features five mounting spaces and has an all-black finish. Mfg: Elcan