[Laser Type] the end barrel bore sighter has bright red laser beam, power less than 5mW, Class IIIA
[High Accuracy] this lase bore sight perfect fit for .22LR caliber, the red beam is zeroed from the factory to ensure your sighting accurate, no more adjustment for the boresighter
[Sturdy Body] the 22 LR bore sight made from full brass body, high erosion resistant and sturdy construction
[Easy to use] this end barrel bore sight is to use and operation, just insert it to the barrel and the laser beam will coincident with the central axis of the barrel
[Spare parts] the bore sight comes with extra batteries and extra O-rings, the O-rings can help the bore sighter tighter fit inside the barrel to maintain the precision of the calibration