For long-range competitors and open-country hunters, the Impact^® 4000 delivers range, ballistic, and environmental data all-in-one, without you having to ever come off the gun. Intuitive to use. Rugged and reliable. This advanced, rail-mounted laser rangefinder integrates seamlessly with your rifle, providing point-and-shoot solutions—functioning in places your smartphone can’t for deadly speed and precision no matter where you are.