Warne 6101M Red Dot Riser T1 Interface Black Anodized Co-Witness Riser Base Mount Aluminum MSR 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 We Offer Share a Robust Mounting Base, While The Top Is engineered specially For Different Red Dot Styles. Includes a .180" Thick Spacer. Fits The T1-T2, H1-H2, Crossfire, Romeo 5 Red Dot And Holosun 403, 503, 515, 530. Model: Red Dot Riser Material: Aluminum Pieces: 2 Mount Type: Co-Witness Riser Base