<b>SPECIFICATION</b><br> -- Output Power: <5 mW<br> -- Laser Class: IIIA<br> -- Battery Type: LR41<br> -- Construction: Brass<br> -- Range for Sighting: 15 to 100 yards<br> -- Dot Size: 2 inches at 100 yards<br> -- Operation: on/off end cap<br> -- Temperature: -10℃ to 40℃<br> <br> <br> <b>HOW TO USE</b><br> 1.Unscrew the back cap from the bore sight by turning counter clockwise<br> 2.Stand the bore sight on a flat surface with the laser side pointing down<br> 3.Insert batteries (+ side up) inside the rear opening<br> 4.Carefully push down and turn the screw cap clockwise to tighten the cap <br>(the laser is now on)<br> 5.Place in your rifle’s chamber and close the bolt<br> 6.To remove - open the bolt if it does not automatically extract, manually <br>remove the unit by tilting the rifle’s barrel upward (always practicing safe <br>firearm practices)<br> 7.Unscrew the back and remove the batteries to turn the unit off<br> <br> <br> <b>CAUTION</b><br> -- Be sure that your firearm is unloaded and pointed in a safe direction before<br> attempting to insert the boresighter.<br> -- Do not dry-fire your firearm while the boresighter is inserted. It may cause<br> damage to the bore sight.<br>