The Barska Air Gun Scope is ideal for both competitive and recreational shooters. This Barska Scope is designed to withstand the extraordinary punishing recoil energy of airguns. With crystal clear optics and a 40mm objective lens, this pellet gun scope offers a great view. This Barska Air Gun Scope has multi-range parallax setting adjustments and a Mil-Dot reticle for pinpoint accuracy and precision firing. Waterproof, fog proof, and shockproof, the Barska Scope can be used in several conditions or situations. This Barska Air Gun Scope measures 13.66" long x 4" wide x 4" high. Barska Air Gun Scope 3-12 x 40 AO: * Model AC10008 * Waterproof/fogproof/shockproof * 1" tube construction * 3-12 power * 40mm objective lens * Mil-Dot Reticle * Length: 13.66"