BSA AR 4x32 Air Rifle Scope with Adjustable Objective * Magnification: 4X * Objective Lens Diameter: 1.26" * Optimum Eye Relief: 3" * Field of View @100 Yds: 17.84 * Parallax Setting: 17.5 to infinity * Click Adjustment Value: 1/4 * Weight: 14.1 ounces