Barska CO11342 Colorado 3-9x40 Riflescope, Silver: * Waterproof, fogproof and shockproof riflescope * Barska Colorado has a duplex reticle * 1" main tube * Adjustments: 1/4 MOA at 100 yards * Eye relief: 109-66mm * Field of view at 1,000 yards: 12.04"-37.35" * Exit pupil: 4.4mm-12.33mm * Length: 12.2" * Weight: 13oz * Silver finish * Limited lifetime warranty