The Wheeler Engineering Professional Laser Bore Sighter Green (PROF LASER BORESIGHTER GRN) from Wheeler Engineering delivers fast, accurate bore sighting with a high power daylight visible green laser and a robust magnetic connection to the muzzle for precise bore alignment without risking bore damage. This versatile tool works with virtually all firearms, including rifles, shotguns, and handguns, offering a reliable solution for quick initial scope adjustments and precise optic alignment. Its machined aluminum body with soft rubber over-molding houses the laser module, which is hand-tuned during manufacturing with an innovative calibration mechanism to maximize precision and ensure optimal bore-to-optic alignment; once calibrated, the laser module is permanently secured for dependable performance and durability. A molded plastic storage case is included for protection and portability, and the device runs on a single Lithium 123A battery, which is included for immediate use. The result is a simple, fast, and accurate bore sighting experience that enhances shooting setup, reduces time at the range, and improves overall accuracy across a wide variety of firearms.