The Professional Laser Bore Sighter uses a high power red 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 damage to the bore. A machined aluminum body with soft rubber over-molding houses the laser module. Each unit is hand tuned during the manufacturing process for maximum precision.