Higoo All in One .22 to .50 Caliber Rifle Gauge Boresight Red Dot Laser Boresighter

Laser Features:
Laser ClassïšClass IIIA
Power¤5mW

Description:
Accurate Laser Bore sight collimator
Suitable for any 0.22 to 0.50 handguns, rifles, sights and riflescopes
More convenient and accurate than scope and sight alignment
Allows you to instantly and accurately set your sight or scope
Color: Black
Length: approx 155mm
Head Diameter: approx 16mm
Tail Diameter: 5mm
Battery: 3 x LR44/AG13 button battery (included)
Package Included:
1 x Red Laser Bore Sighter
1 x Screwdriver
1 x Wrench
4 x Adjustable Adapter Tip
Notice: Some buyers say this laser can not work, it might because mistake on using it or the connecting between the battery tube and the laser is not very well. We already tested this laser ONE BY ONE before shipping.Pls put the batteries into the battery tube and put the tube into the laser as the last picture shows(be careful about the diretion of the battery and the battery tube). If still not work, pls contact us directly for a solution.