Product: Gaialoop 223 Laser Bore Sight, 556 Laser Boresighter, Red Dot Cal Boresight Zeroing with Two Sets of Batteries
Brand: Gaialoop
SPECIFICATIONS:
Maximum Output Power: less than 5mW.
Laser Class: IIIA
Wavelength: 635-655nm.
Power Source: Six(6) LR-41 button cell batteries.
Material: High quality gold-plated 
Illumination Type: visible red laser
Sighting Range: 15 to 50 yards

How to use the bore sight?
1.Unscrew the back cap from the bore sight by turning counterclockwise
2.Insert batteries inside the rear opening,pay attention to the positive and negative poles
3.Carefully push down and turn the screw cap clockwise to tighten the cap (the laser is now on)
4.Place in your rifle’s chamber and close the bolt

How to remove the bore sight?
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)
2.Unscrew the back and remove the battery to turn off the device
👍LASER PARAMETERS-Class IIIA laser, less than 5mW
👍INCREDIBLE ACCURACY-Faster gun zeroing to aim at the target and sighting system and save you time and cartridges. The sighting range of the bore sight is 10 to 100 yards.
👍SIX BATTERIES-Come with 2 sets (6 total) upgraded LR41 batteries. Each set lasts up to an hour.
👍COMPITABLE WITH-The boresighter is suitable for .223mm chamber, caliber specific, like for AR-15. Sturdy gold-plated design and unique color. Come with instructions, easy to use.
👍HIGH VISIBILITY-This laser is so powerful that can be seen with the naked eye at distances of up to 100 yards!!

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