Designed for use on AR-style rifles or tactical bolt action rifles. Waterproof, fogproof as well as shockproof and it is nitrogen filled as well with O-ring sealed option also available in Nikoplex Reticles and BDC 600 Reticles. Features: Rapid Action Turret Technology - paired with Nikoplex reticle. Return to Zero Turrets - for fast, simple field adjustments. Ultra ClearCoat® Optical System. Eye Box Technology - 4-time zoom and 4 inches of constant eye relief. Ultra ClearCoat Optical System. Matte finish.