The Vortex Optics Viper PST Gen II 3-15x44 riflescope delivers tactical optical performance with a 30 mm diameter tube constructed from aircraft-grade aluminum for maximum strength and durability. This first focal plane optic features a 3-15x magnification range with a 44 mm objective lens, providing crisp, bright images across the entire zoom spectrum. The illuminated EBR-2C MRAD reticle remains proportionally scaled at all magnification levels, enabling accurate holdover and ranging calculations. XD extra-low dispersion glass elements enhance resolution and color fidelity, while XR fully multi-coated lenses optimize light transmission for superior image clarity. The precision-glide erector system ensures smooth magnification transitions, and the fast focus eyepiece allows quick reticle adjustment. Exposed tactical turrets with matching MRAD or MOA adjustments offer substantial elevation and windage range for long-distance shooting applications. The integrated RZR zero stop mechanism reliably returns to your established zero point after extended dialing sessions. Constructed with a single-piece tube design, this riflescope maintains waterproof integrity through O-ring seals and fogproof performance via argon gas purging across diverse temperature conditions. The hard anodized finish provides a low-glare matte surface, while ArmorTek coating protects exterior lenses from scratches and environmental contaminants. The rugged shockproof construction withstands significant recoil and impact forces, making it suitable for demanding field use. The fiber optic radius bar offers clear visual reference for turret rotation tracking, enhancing shooting precision during rapid engagements. This optic combines advanced mechanical features with premium optical components to deliver consistent performance in various lighting and environmental scenarios.