Created to meet the demands of gunsmiths and serious shooters, the BUSHNELL Laser Boresighter (740100C)
includes arbors for .22- through .50-caliber firearms. Its bright, battery-powered laser makes rapid, ultra-precise work of boresighting.
The Laser Boresighter runs on three LR-44 batteries, and it can be attached to firearm in less than a minute. Simply select the correct arbor, fit it to your barrel, and turn the laser on.