Instructions

Unscrew the back cap from the bore sight by turning counter clockwise
Stand the boresight on a flat surface with the laser side pointing down
Insert 4 batteries (+ side up) inside the rear opening.
Carefully push down and turn the screw cap clockwise to tighten the cap (the laser is now on)
Place in your rifle's chamber and close the bolt
To remove - open the bolt if it does not automatically extract manually remove the unit by tilting the rifle's barrel upward (always practicing safe firearm practices) Unscrew the back and remove the batteries to turn the unit off