Warne Aimpoint T1 Modular Mount Matte Black - 1 piece - The Warne Aimpoint T1 modular mount was designed to offer easy height adjustments between absolute and lower 1/3 co-witness in one package to fit all T1/T2 interface red dot optics. All riser mounts that Warne offers share a robust mounting base, while the top is engineered specically for different red dot styles. Height w/o insert Absolute Co-Witness; Height w/insert lower 1/3 rd Co-Witness; T1-T2 type interface; Fits the T1-T2, H1-H2, Crossfire, Romeo 5 Red Dot and Holosun 403, 503, 515, 530; All risers include a .180" thick spacer; Designed and MADE IN USA; 3oz;