BSA Tactical Weapons 4x30mm Scope with Mil-Dot Reticle Rings, and AR/SKS Mount: * Fully multi-coated optics * 2-piece Weaver-style ring mounts * Fogproof, shockproof and waterproof * Microfiber lens cloth * Magnification: 4x * Object lens diameter: 30mm * Field of view at 100 yds: 23-10.4 * Parallax setting: 100 yds * Click adjustment value: 1/4 * Adjustment range: 45-45 * Weight: 18 oz * Dimensions: 8"L x 1.6"W x 1.2"H * Model# TW4X30