Chamber the Sightmark Laser Boresight in your 6.8 Remington SPC rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Ideal for hunters, competitive, and law enforcement, this device significantly reduces wasted cartridges and shells. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions.