Precision engineered for tactical and target shooters the crimson trace hardline optics are the result of meticulous design from the ground up. These optics feature aerospace grade 1 inches and 30mm tubes engineered to endure the toughest use, guaranteeing exceptional durability. With ample eye relief for quick target reacquisition, these optics are fully multi-coated, nitrogen purged, waterproof, and ready to tackle a variety of environmental challenges. You can have peace of mind knowing that all crimson Trace scopes are backed by a lifetime protection guarantee warranty and our dedicated customer service team is here to assist you at all times.