VOTATU Laser Bore Sight for .223 Rem 5.56 mm NATO Cartridge Bore

SAVE AMMO: Reduce wasted ammo, the fastest gun zeroing and sighting way to boresight your scopes & sights without firing any ammo. High Visibility Laser: Powerful class IIIA <5mW 632-650nm red laser beam, with a 100 yard sighting range, perfect for helping you get on target quicker. Accurate: Precision machined lightweight aluminum casing for optimum accuracy, finished in ‎gunmetal grey. Long Life Time: Two extra set of batteries included,comes with 3 sets of batteries (9 batteries) provides long lasting battery life. NOTICE: Unwrap the batteries first and use only 3 batteries at a time. COMPATIBILITY: Designed to make it quick and easy to bore sight your rifle chambered in .223/5.56.