Truglos Buckline Hunting Scope is designed for hunters in pursuit of whitetail hogs and other medium to large game. It features a waterresistantfogproof nitrogen gasfilled onepiece aluminum tube with fullycoated lenses for maximum brightness clarity and contrast. The tube also has a durable scratchresistant nonreflective matte finish. Additional features of Buckline Hunting Scope included removable lens caps generous eye relief and a durable leafspring for windage and elevation adjustments.This 39x40mm model has a BDC reticle.