Laser Bore Sight Cal Red Dot Boresighter 223 5.56mm Laser Sight Rem Gauge with 6 Batteries;

E-link Laser Boresight provides a convenient, accurate, and cost effective method for sighting in rifles and shotguns of all types. The laser dot will show exactly where the rifle is aiming--without firing a single shot. Live fire is only needed to fine tune the weapon being sighted in order to compensate for inconsistencies, such as bullet drop due to distance.

Product Update Instructions: New bore sight kit buy one get two sets batteries (6 batteries). Each set battery can continuous work normally for 1 hour, 6 batteries provide 2 hours of battery life. Buy One Get One.

STEPS:
1.Fix your firearm in a stable platform
2.Turn the boresighter to the ON position
3.Inset your boresighter fully into the empty chamber. Avoid closing the action as the extractor may damage the boresighter
4.You may sight in your firearm at any desired distance that the laser is visible
5.Align your firearm so that the laser is centered on the bull's-eyes
6.Adjust your scope (according to the manufacturer's specifications) so that the reticle of the scope matches with the laser and targets alignment. You now have a rough zero that should get you "on paper"
7.Remember to remove the boresighter before attempting to load your firearm with live ammunition. Turn the boresighter OFF and store in a cool dry place

Material: High Quality Brass
Laser Wavelength: 635-655nm
LED Type: Visible Red Laser
Sighting Range: 10-80 yards
Dot Size: 1.5" @ 100 yds
Laser Beam: <5 mW
Length: 1.77" (45mm)
Batteries Model: 3 of AG3
Class IIIA laser: 5mW or less

WARM WARNING: Laser boresighter is designed for the chamber sizes marked on the boresighter as well as on the packing label.
DO NOT attempt to insert this boresighter into a different sizes chamber. Doing so may result in damage to the boresighter and or the chamber.