Vortex Driftless HD 3-9x 40mm Rifle Scope - Good design sticks around because it works. The Driftless HD lineup keeps the traditional riflescope profile hunters trust while upgrading the view with a modern HD optical system and proven magnification ranges relied on for generations across predators, small game, and big game. It's tradition refined for the way you hunt today. Features HD Optical System: Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration, and provide outstanding color fidelity, edge-to-edge sharpness, and light transmission.; Fully Multi-Coated Lenses: Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity in low-light performance.; Argon Gas Purged: Gas Purged and O-ring sealed for fogproof and waterproof performance in all conditions.; Fast-Focus Eyepiece: Allows quick and easy reticle focusing.; Aircraft Grade Aluminum: Constructed from a solid brick of aircraft-grade aluminum for strength and rigidity.; Low-Glare Matte Black Anodize: Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position.; Waterproof: Designed to withstand harsh weather conditions.; Fogproof: Designed to withstand a wide range of temperatures.; Shockproof: Designed to withstand the highest levels of recoil and impact.; Includes Neoprene Cover; Lens Cloth; 2mm Custom Tool;