SPECS: Base - 6061 T6 aluminum, hardcoat anodized, matte black. Lever - 4140 steel, matte black. Standard – 2¾” (7cm) O.A.L. x 1-5⁄8" (4.1cm) wide. Height from top of rail to bottom of optic is .25” (6.4mm). Cantilever - 4¾” (12.1cm) O.A.L. x 2” (5.1cm) wide. Height from top of dovetail to bottom of optic is .615” (15.6mm).