SPECIFICATIONS:<br>Maximum Output Power: less than 5mW.<br>Laser Class: IIIA<br>Wavelength: 635-655nm.<br>Power Source: Six(6) LR-41 button cell batteries.<br>Material: High quality gold-plated <br>Illumination Type: visible red laser<br>Sighting Range: 15 to 50 yards<br><br>How to use the bore sight?<br>1.Unscrew the back cap from the bore sight by turning counterclockwise<br>2.Insert batteries inside the rear opening,pay attention to the positive and negative poles<br>3.Carefully push down and turn the screw cap clockwise to tighten the cap (the laser is now on)<br>4.Place in your rifle’s chamber and close the bolt<br><br>How to remove the bore sight?<br>1.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)<br>2.Unscrew the back and remove the battery to turn off the device