Features: * Waterproof/fogproof/shockproof * Multi-coated optics * 30mm monotube construction for maximum light gathering * Side turret-mounted adjustments for parallax correction * Easy-grip target-style windage and elevation adjustments * 1/8 MOA click adjustments * Fast focus eyebell * Precise and easy-to-use for tactical environments Specifications: * Model AC10550 * 10-40 power * 50mm objective lens * Mil Dot Illuminated Reticle * Exit Pupil: 5.0-1.3mm * Eye Relief: 3.6" * Tube Diameter: 30mm * Click Value: 1/8in * Finish: Black Matte * Weight: 31.4 oz. * Length: 15.7"