The Trijicon mro 45 degree offset quick release mount features a 7075-T6 aluminum design, with an easy to use one handed tool less mounting system. Designed to mount an mro at a 45 degree angle next to your primary optic which makes it ideal for close range shooting. The mount features the ability to attach to either the right or left side of the weapon. It also has return to zero features in a low weight, low profile design which works with any Picatinny rail. Package includes: - 1 mount - 4 screws- - 2 hex key - 1 installation booklet. Specifications: - distance from top of mounting rail to optical axis: not available - dimensions: 1.50" L x 2.90" W - weight: 2.37 oz - finish: matte black anodized