The Professional Laser Bore Sighter uses a high power daylight visible green laser and a high-strength magnetic connection to the barrel to deliver fast accurate bore sighting. This system works with virtually all firearms; rifles, shotguns, handguns. The magnetic connection to the end of the muzzle provides more precise alignment with the bore without the risk of damaging the bore, compared to arbor style bore devices. A machined aluminum body with soft rubber over-molding houses the laser module. Each unit is hand tuned during the manufacturing process with an innovative calibration mechanism. This allows for maximum precision, thus ensuring the best bore/optic alignment possible. Once precision calibration is completed the laser module is permanently secured in place insuring reliable performance and durability. Molded plastic storage case included. Runs on a single Lithium 123A battery (included).#html-body [data-pb-style="62DF8287CCAC6"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF8287CCAD4"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}