Designed with precision for tactical and target shooters the crimson trace hardline optics are the result of meticulous ground up engineering. These optics feature aerospace grade 1 inches and 30mm tubes, purpose-built to withstand the most demanding use, ensuring exceptional durability. With generous eye relief for rapid target reacquisition, these optics are fully multi-coated, nitrogen purged, waterproof, and ready to conquer a wide range of environmental challenges. Rest assured, all crimson Trace scopes are backed by a lifetime protection guarantee warranty and our dedicated customer service team is always ready to assist you.