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. Specifications for Springfield Armory Trijicon RMR Agency Optic System Mounting Plate: Manufacturer: Springfield Armory Red Dot Sights-Footprint: RMR Optic Cut: Springfield Prodogy Fabric/Material: Billet Steel Color: Black Gun Model: Springfield Armory 1911 DS Prodigy Attachment Type: Screw Condition: New Package Contents: Springfield Armory Trijicon RMR Agency Optic System Mounting Plate Screws