CVLIFE Green Laser Bore Sight for .223/556 9mm Cal, 30-300 Yards Sighting Range, Upgraded 4 Sets of Batteries, Laser Accuracy, Outdoor Green Laser Zeroing Boresighter

[Bright Green Laser] Green dot 223 5.56 laser bore sight can reach the sighting range up to 30-300 yards with your scope or sights. Clear and bright.
[Long Lasting] Up to 40mins battery life per set, laser bore sight provides more time to properly sight in your optics, iron sights or long gun sights without having to swap batteries.
[Extra Batteries] Comes packaged with a 223 5.56mm laser bore sight and 4 sets of batteries (12 x LR41). Avoid the trouble of buying additional batteries in the short term.
[High Accuracy] Use in chamber for .223 Rem and 5.56mm Cal. Reliable accuracy help to fast zeroing and sighting, saving time and reducing cartridges wasted.
[Specifications] CVLIFE bore sighting laser class IIIA, less than 5mW. Sturdy brass construction.