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. Features 34mm Maintube Bullet Drop Compensation Lightweight Aluminum Housing Motion Sensor Technology (MST) Punisher Tested Push Button Illumination Waterproof & Fogproof Made In United States of America WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.