More Accurate: This boresight installs in the barrel of the firearm, projects a laser beam from the center of the bore axis, and provides a precise reference to zero-in your optic or iron sights, reducing cartridges and shells wasted.
Upgraded battery compartment: This upgraded battery compartment can lock the battery in the correct position and make contact with the points, ensuring the boresighter works fine, easier to mount compared with others. Don't worry about losing your batteries.
9 Bore Adjustable Adapters: Laser bore sight kit with multiple caliber fit any 0.17 to 0.54 handguns rifles, sights and riflescopes, which allows the accurate bore alignment of scopes, iron sights or laser sights on handguns and rifles.
Push Button Switch: The button switch can control the boresight laser conveniently while pressing the switch and save power when you stop using.
Caution: This tool is not available for the barrel with silencer. Keep the red laser beam away from eyes. Class IIIA laser, less than 5mW
ASIN#: B089W4WMWB