Developed in collaboration with Agency Arms the Prodigy employs AOS (Agency Optic System) plates designed exclusively for the 1911 DS. Machined from billet steel, each plate is designed specifically to deliver proper optic height for intuitive sight picture and instant target acquisition and features an integral rear sight. Each AOS plate ships with screws to mount the plate to a 1911 DS handgun. Mounting Plate A14B Fits: Trijicon RMR (Iron Sights Visible) Trijicon SRO (Iron Sights Visible) Holosun 407C-X2 (Iron Sights Visible) Holosun 507C-X2 (Iron Sights Visible) Holosun 508T (Iron Sights Visible) Riton X3 Tactix (Iron Sights Visible) Swampfox Justice (Iron Sights Visible) Bushnell RXM-300 (Iron Sights NOT Visible)