The Trijicon RMR full co-witness quick release mount features a mil-spec drop test rated 7075-T6 aluminum design, with an easy to use one handed tool less mounting system. This return to zero mount boasts a low weight and low profile design, compatible with any Picatinny rail. Features: - designed specifically for the Trijicon RMR. This lightweight full co-witness mount is perfect for mounting the RMR on any rifle platform with a Picatinny rail. The AC32074 provides a full co-witness with backup iron sights - this means that the RMR is mounted at the same height as the iron sights. The optic's aiming dot will appear at the top of the iron sight post - this mount is typically used with flip up iron sights. Package includes: - 1 mount - 4 screws - 1 hex key - 1 installation booklet. Specifications: - distance from top of mounting rail to optical axis: 1.384" - dimensions: 1.80" L x 1.70" W - weight: 2.20 oz - matte black anodized