Kruger 63301 K4 Riflescope - 3x-12x 50mm: * U.S. engineered and assembled * Rapid Target Technology (RTT): large exit pupil for quick target acquisition * Fully multicoated optics * 3.75" eye relief for all magnifications * 1/4 minute click windage & elevation adjustment * Waterproof/fog proof/nitrogen-processed * 1-piece 1" main tube mounting diameter * Hunter duplex reticle * Protective quick release cover * Model# 63301