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. Package Includes 1 Mount 2 RMR Screws 1 Allen Wrench Features Lower 1/3 Co-witness See Through Design helps keep the mount lightweight and improves field of view Compatible With Any Mil-Std-1913 Picatinny Rail Rugged Aluminum Design Easy-to-use Colt Knobs no tools needed Specifications Fits All Trijicon RMR Models Length 1.78 Weight 3.44 oz. Finish Matte Black Anodized SOLD QUANTITY 1