Micnaron Red Dot .308 Winchester Laser Boresighter/Boresight/Bore Sighter Hunting 308 243 REM Laser Bore Sight Brass Red Dog Laser Bore Sighter Great Accuracy (308 Yellow)

Excellent Performance
The Micnaron bore sights features versatile tool to ensure an accurate aim and it is great ideal for hunting
-Works good when sticking to pistols and rifles

Compact Engineering
-Help you sight in a new gun or check the zero on your scope after a turbulent flight or other rough treatment. Quality boresights also make a great training aid
Efficiency in hunting
-The laser is strong brass pro also the battery container
-Most simple for use: A quick and easy way to sight in your rifle scope

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. 

-Do not dry-fire your firearm while the boresighter is inserted. Doing so may cause damage to the bore sighter. 

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.