The C1 T2 RDM is the next generation of Aimpoint mounts. This is a super rugged mount with a minimal foot print, solid mounting system and elegant C1 styling. Allows the use of any C1 J-arm socket accessory. 7075 T6 Aluminum with integral recoil lug, Mil Spec Type lll Hardcoat Anodized. 1.70" Lower 1/3rd co-witness height.