Sightmark SM39001 Boresight Red Laser 223 Rem,5.56x45mm NATO Brass

Tested and recommended by the National Tactical Officers Association, the Sightmark boresight significantly reduces wasted cartridges and shells. Chamber the device in your .223 rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three AG3 batteries, and instructions.