Leupold Mark 6 1-6x20 Riflescope, 7.62 M6C1, Illum. Front Focal CMR-W Reticle, 34mm (114337) Magnification: 1-6x Objective diameter: 20mm Eye relief: 3.7" Extended Twilight Lens System maximizes transmission of low-light conditions Blackened Lens Edges: absorb stray light and improve contrast improved accuracy at longer ranges