The Burris FastFire II Red Dot Sight is a small and lightweight sighting system that drastically increases both speed and accuracy in aiming. The innovative design of the FastFire II eliminates the need for aligning both the front and rear sight with the target, thereby simplifying the act of aiming your weapon. The Burris FastFire II Red Dot Sight includes a Picatinny mount, which ensures easily installation on almost any rifle. This red dot sight includes precision lenses that are expertly polished to provide crisp imagery and to all but eliminate parallax. 4-MOA dot size Bright-red dot allows for fast target acquisition and easy aiming Compact and lightweight, so it won't affect firearm balance or handling 1x magnification allows both-eyes-open shooting, for enhanced awareness and target acquisition Parallax-free, for better accuracy Mounts to almost anything-including handguns, rifles, and shotguns-using Burris mounting systems Automatic brightness sensor adjusts brightness to match the environmental conditions Windage and elevation adjustments make fine-tuning easy High-grade optical glass provides excellent brightness and clarity, with lasting durability Index-matched, Hi-Lume multicoating provides low-light performance and glare elimination Waterproof Shockproof design stands up to years of punishing recoil CR2032 battery included Comes with our Burris Forever Warranty Includes Picatinny mount for mounting on rifles, handguns, and tactical shotguns