Aimshot BS22320X Laser Boresighter Cartridge 223 Rem Brass 20X Brighter

The most complete, accurate, easy and inexpensive way to accurately bore sight your weapon. By installing a laser diode into a .223 Rem. for rifle and 9mm, 30 cal. for pistol and utilizing an assortment of arbors (except 9mm, no arbor required), it is possible to bore sight virtually any caliber weapon. 20X is a brighter model.