Viper 6.5-20x50 BDC Matte, PA, 30mm tube VIPER 6.5-20X50 PA RIFLESCOPE Effortlessly shrugging off recoil, moisture and darkness! The Viper's status as a premium riflescope won't be as easy to shake. Discover a riflescope with incredible performance features like premium, fully multi-coated optics with 95 percent light transmission, heavy duty Precision Force spring systems and the glass smooth Precision Glide erector system—delivering all this and more at a price that should have pulled a few more hundreds from your wallet than it did. 6.5-20x50 riflescope is ideal for long range, predator/varmint, and target applications. Dead-Hold BDC reticle has a customized design that helps eliminate guesswork on hold-over and windage corrections. Good for any hunting or shooting at varying ranges where estimating hold-over would be a concern. Side knob parallax adjust allows quick and easy parallax adjustments with range numbers visible while in the shooting position. 30mm main tube offers improved windage and elevation adjustment along with greater strength. Tall capped turrets allow quick and easy field adjustments.