BSA Special Series 3-9x40mm Rifle Scope with 30/30 Duplex Reticle and 100-Yard Parallax Clam Pack: * Features: * Fully coated optics * 1/4 MOA W/E adjustments * Fogproof, shockproof, waterproof * Eye relief: 3.5" * Magnification: 3-9x * Object lens diameter: 40mm * Field of vision at 100 yds: 40-13 * Parallax setting: 100 yds * Click adjustment value: 1/4 * Adjustment range: 40-40 * Weight: 15.75 oz * Dimensions: 12.8"L x 2.4"W x 6.3"H * Model# S39X40CP