Warne Picatinny Modular Red Dot Rise Mount Matte Black - 1 piece - The Warne Picatinny Modular Red Dot Riser mount was designed to offer easy height adjustments with the included spacer to fit red dot optics that use a picatinny attachment and require a riser for use on an MSR. Since picatinny mounted red dots can vary in height, this mount allows the user to select 2 different heights based on their needs. All riser mounts that Warne offers share a robust mounting base, while the top is engineered specically for different red dot styles. Height witho insert .805" top of rail to top of riser Height withinsert .985" top of rail to top of riser All risers include a .180" thick spacer Designed and MADE IN USA 3oz