Description Tested and recommended by the National Tactical Officers Association, the Sightmark® Laser Boresight significantly reduces wasted cartridges and shells for both .223 rifles and 9mm Luger pistols. Simply chamber the device like a regular cartridge, and a red laser dot shows exactly where you're aiming. Ideal for hunters, competitive shooters, and law enforcement, it allows for quick and precise sight or scope adjustments—saving your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions. US Pat. D772372S1