The Crimson Trace Hardline Pro optics are designed with the experienced tactical and target shooter in mind and have been purposefully built from the ground up. The line offers short, medium and long-range optics with a variety of custom reticles and features aerospace grade 30mm tubes. They are fully multi-coated, nitrogen purged, shock resistant, and ready for whatever elements they encounter. All Crimson Trace® scopes are covered under the LIFETIME protection guaranteed warranty and backed by our award-winning customer service team.