EOTech's Vudu 1-10x28mm Riflescope combines durability and precision into one high-performance optic! It features a one piece, aircraft grade aluminum tube for superior strength and shock resistance. The lenses are constructed from XC High-Density glass with multi-coatings for exceptional light transmission and outstanding edge-to-edge clarity. The Vudu's elevation turret is exposed for making adjustments in the field, and uses a unique push-pull locking mechanism to prevent any accidental changes. When making adjustments, the turrets produce an audible and tactile “click” to assist the shooter in making the proper point-of-impact corrections. Other features of the Vudu 1-10x28mm is the advanced SR-4 reticle. The SR-4 is composed of a precise 1-MOA illuminated dot in the middle of an illuminated circle, with horizontal and vertical stadia lines with multiple holdover points. This entire configuration is in the center of EOTech's exclusive Speed Ring. Thanks to the SR-4's first focal plane position, the Speed Ring can be used to rapidly acquire and engage targets at shorter ranges and lower magnifications, essentially allowing the shooter to use the Vudu 1-10x28mm like a red dot sight. When the magnification is dialed up, the Speed Ring disappears from view and the SR-4 reticle is brought into full focus. This significantly improves accuracy at longer ranges, and lets the shooter take full advantage of the reticle's holdover points for bullet drop and wind drift compensation.