Leupold 115044 Mark 6 Illuminated Rifle Scope with 1 to 6X Magnification, 20-Millimeters, Black Matte Finish Magnification: 1-6x Objective diameter: 20mm Eye relief: 3.7" Xtended Twilight Lens System maximizes transmission of low-light conditions Blackened Lens Edges: absorb stray light and improve contrast improved accuracy at longer ranges