AIS Flat plates are made specifically and only for Griffin's SPRM2 product family of optics mounts. 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 SPRM optic mounts to provide the user with the most flexibility available on the market. The flat plates are a subset of the Griffin AIS (Accessory Interface Suite).Features:The AIS (Accessory Interface Suite) allows users to mount to SPRM 5 sided interfacing for left and right handed users Low profile for tight fitment of the secondary optic against the scope mount Mounting screws - 8/40x7/16 (.430" OAL) T-15 TORX #6 Type 3 mil-spec hardcoat anodizingLifetime Warranty6061 T6 aluminum