Griffin Armament Aimpoint Acro Plate Black Anodized Hardcoat 6061 T6 Aluminum. Flat plates allow users to position both secondary non-magnified optics and other accessories adjacent to their primary day optics for ease of use. The Flat accessory plates can be mounted on all 5 sides of the GPM optic mounts to provide the user with the most flexibility available on the market. Specifications for Griffin Armament GSMAACROFP Aimpoint Acro Plate Black Anodized Hardcoat 6061 T6: Manufacturer: Griffin Armament Fabric/Material: 6061-T6 Aluminum Griffin Armament GSMAACROFP Aimpoint Acro Plate Black Anodized Hardcoat 6061 T6