These units are factory blemished and may have small cosmetic blemishes but have been inspected and serviced by Leupold. They are guaranteed to perform up to Leupold's high standards and are covered under their Gold Ring Full Lifetime Warranty. All red dots are not created equal. The Freedom RDS (red dot sight) changes the game when it comes to consistency and durability in a red dot sight. This BDC model comes with a pre-calibrated dial for 5.56/.223 55gr rounds that let's you accurately adjust the dot out to 400+ yards.Leupold took their 70+ years of optics knowledge and created a red dot that's built Leupold tough, performs in extreme conditions, and won't break the bank. It's everything you need in a red dot and nothing you don't. Features34mm MaintubeBullet Drop CompensationLightweight Aluminum HousingMotion Sensor Technology (MST)Punisher TestedPush Button IlluminationWaterproof & Fogproof