Built around Leupold's top-of-the-line Professional-Grade Optical System, the Leupold VX-6HD Gen 2 CDS-SZL2 Rifle Scope offers best-in-class light transmission and the features you need to dominate on the hunt. The combination of high-definition lenses and a full suite of advanced coatings helps to deliver more light to your eye for a brighter sight picture at dawn and dusk, along with edge-to-edge clarity and superior glare reduction. The VX-6HD also features competition-grade adjustability. Each scope is eligible for CDS-SZL2 elevation dial: Leupold will customize your scope's elevation dial to match your exact load, muzzle velocity, and environmental conditions. Once your custom dial is installed, simply range the target, turn the dial to your number, and aim dead on. The side focus adjusts the scope's parallax, making the reticle clearer with less perceived movement when you're shooting at different distances, and the ZeroLock system eliminates accidental dial movement and allows for easy return to zero. All VX-6HD models feature an illuminated reticle with Motion Sensor Technology that extends battery life. Each scope is extreme climate-tested and 100% waterproof and fogproof with advanced sealing methods that withstand extreme temperatures. Alumina flip-back lens covers included. Mfrs. lifetime guarantee. Professional-Grade Optical System High-definition lenses Guard-ion lens coating sheds water and dirt Custom Dial System matches your exact load, velocity and environment ZeroLock system for easy return to zero Precision side focus Illuminated reticle with Motion Sensor Technology 100% waterproof and fogproof