BSA Special Series 3-9x50mm Rifle Scope with 30/30 Duplex Reticle and 100-Yard Parallax: * Features: * Fully coated optics * 1/4 MOA W/E adjustments * Fogproof, shockproof, waterproof * Eye relief: 3.5" * Magnification: 3-9x * Object lens diameter: 50mm * Field of vision at 100 yds: 39-13 * Parallax setting: 100 yds * Click adjustment value: 1/4 * Adjustment range: 35-35 * Weight: 12 oz * Dimensions: 12.3"L x 3.1" diameter * Model# S39X50