The AimSHOT Bore Sight is the most complete, accurate, easy and inexpensive way to bore sight any firearm. By installing a diode into a (.223 Rem for rifle and 9mm, 30 Carbine for pistol), and utilizing an assortment of arbors it is possible to Bore Sight virtually any caliber weapon. The AimSHOT Bore Sight is manufactured in accordance to the highest military and industry standards with the latest cutting edge technology. This is an invaluable tool for any gun enthusiast! The AimSHOT Bore Sight will save time and ammo while allowing you to sight your weapon in an area where discharging a firearm may not be possible. Gunsmiths, hunters, gun shop owners, and law enforcement personnel consider the AimShot a must have when bore sighting their firearm equipment.