With over 50 years of steady performance and constant refinement" the latest Fullfield riflescope from Burris is the surest companion a hunter or shooter can have. The completely redesigned Fullfield IV" is rugged" lightweight" and most importantly reliable for an accurate shot every time. Five Fullfield IV models are offered each with improved 4x optical system" premium multi-coated lenses for edge-to-edge clarity and low light performance and a wide selection of reticles. Fullfield IV riflescopes are built with nitrogen filled tubes and are waterproof" shockproof and fog proof and can handle recoil from all platforms including air rifles" slug guns and high caliber rifles. New designed sleek turret knobs allow easy finger adjustments. Like all Burris products" the Fullfield rifle scope comes with the Burris Forever Warranty.