Designed specifically for the Trijicon RMR. This lower 1/3 co-witness mount is perfect for mounting the RMR on any rifle platform with a Picatinny rail. The AC32062 provides a lower 1/3 co-witness with backup iron sights. This means that the RMR is mounted higher than the iron sights so that it provides a less cluttered field of view. The iron sights are then in the lower 1/3 of your optical window for backup.Height from top of mounting rail to optical axis: 1.516"Package Includes:MountRMR screwsAllen wrenchFeaturesLower 1/3 Co-witnessFits All Trijicon RMR ModelsSee Through Design (helps keep the mount lightweight and improves field of view)Compatible With Any MIL-STD-1913 Picatinny RailRugged Aluminum DesignMatte Black Anodized FinishEasy-to-use Colt Knobs (no tools needed)Made in the USA