The Trijicon RMR/SRO low mount quick release 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. Designed specifically for the Trijicon RMR. This lightweight Low mount is perfect for mounting the RMR/SRO on any weapon platform with a picatinny rail that requires a low optical height. Such as a shotgun, 22 rifle, AK or pistol platform.Features:Distance from top of mounting rail to optical axis for RMR it is 0.923 inches, for SRO it is 1.164 inchesFits the Trijicon SRO reflex optic, RMR reflex sightMade in USA