Instructions &Attention: Your new Cartridge Laser Boresighter is designed for the chamber sizes marked on the bore sighter as well as on the packing box. DO NOT attempt to insert this Boresighter into a different size. Chamber: Doing so may cause damage to the bore sighter and the gun chamber. BATTERY INSTALLATION: Twist the end cap of the boresighter counter clockwise to open the battery housing. Insert the three batteries into the battery negative end first. Be sure that the batteries are all facing in the proper direction to ensure proper function of your bore sighter. Turn the end cap clockwise until it is slightly snug. At this point you should visibly see the red laser. To turn the boresighter off simply twist the end cap counter clock wise until you no longer see the red laser. If you plan to store the bore sighter for long time without use, remove the batteries to preserve power. CAUTION: Do not dry-fire your firearm while the boresighter is inserted. Doing so may cause damage to the bore sighter.
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