Vortex Viper PST Gen II 5-25x 50mm Rifle Scope - The Viper PST Gen II hands an unfair advantage to shooters who seek to keep the upper hand in every situation from close quarters to long-range shots. The illumination dial is cleanly integrated into the side focus adjustment knob for easy access and streamlined performance. The glass-etched reticle offers shooters highly functional, intuitive, and detailed hold points, yet remains uncluttered for optimal viewing and features 10 intensity levels with off positions between each setting. XD Lens Elements Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.; XR Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.; Glass-Etched Reticle Allows for intricate reticle design. Protected between two layers of glass for optimum durability and reliability.; Illuminated Reticle Provides precise aiming under low-light conditions; Single-Piece Tube Maximizes alignment for improved accuracy and optimum visual performance, as well as ensures strength and waterproofness.; Aircraft-Grade Aluminum Constructed from a solid block of aircraft-grade aluminum for strength and rigidity.; Waterproof O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments.; Fogproof Argon gas purging prevents internal fogging over a wide range of temperatures.; Shockproof Rugged construction withstands recoil and impact.; Hard Anodized Finish Highly durable hard-coat anodization provides a low-glare matte surface and helps camouflage the shooter's position.; ArmorTek Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.; Tactical-Style Turrets Exposed turrets provide fast, accurate and easily read elevation and windage adjustments.; RZR Zero Stop Rapid Zero Return (RZR) feature stops the turret from dialing below sight in range using rugged steel components. Internal mechanisms stay free of sand, dirt, dust, moisture and other foreign materials - even when setting the zero-stop position.; Radius Bar Fiber optic turret rotation indicator provides a highly visible and tactile point of reference for turret rotations.; Built-In Accuracy Features Matching (MRAD or MOA) turrets and reticles facilitate fast and accurate shooting at extended ranges. The patented fiber optic Radius Bar visually assists tracking turret rotations.;