308 Bore Sight Laser Red Dot in-Chamber Cartridge ? Red Dot Laser Sighter ?

Save time, money, and frustration by getting on paper with only a few shots for fine tuning. Our professional laser bore sighter is machined to the highest standards to ensure the highest accuracy. 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, comes with 6 batteries. 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 Technical Information ?  Caliber or gauge specific bore sight – This laser unit fits the .308 chamber. ?  Red laser has a wavelength of 635-655nm ?  Human Accessible Power Output / Maximum Output Power: <5mW (milliwatts) ?  Laser Hazard Class llla. The laser hazard class has been determined by an independent laboratory and complies with the 21 CFR 1040.10 and 1040.11. ?  Six (6) AG3 button cell batteries provided; this unit will work with three (3) batteries, however all 4 batteries are recommended for maximum output. ?  Sighting range 15 to 100 yards – Recommended distance is 25 yards indoors.  ?  Will display a 2" dot at 100 yards ?  Brass outer case ?  Operating temperature 14 degrees F to 122 degrees F ?  Includes re-sealable blister pack ?  Lifetime Warranty CAUTION DO NOT ATTEMPT TO SHOOT THE LASER BORESIGHTER. ALWAYS PRACTICE SAFE HANDLING PROCEDURES. DO NOT POINT LASER INTO EYE.