Easy-to-use, self-contained bore sighting system fits in the chamber of your shotgun and  projects a powerful red laser beam aligned with the bore axis for sighting to the point-of-aim without firing a shot.  Works with pin sights, scopes, holographic red dot sights. Durable, machined brass housing - looks like a cartridge case but contains the entire laser system and batteries.
 
Insert the batteries and screw the cap on the housing to turn the laser on, remove the batteries to turn off. Insert the entire assembly into the chamber, gently close the action, and aim at a target 20-30 yards away. Adjust the windage and elevation of the scope or sights so point-of-aim is zeroed in.
 
Material: High quality brass.
Laser wavelength, 625-660nm.
Laser type: visible red laser.
Power: < 1mw.
Battery: Uses 3 X LR44 button cells.
 
Precision Accuracy.
Reliable And Durable.
Fastest Gun Zeroing And Sighting System.
Reduce Wasted Cartridges.
Compact, High Quality Brass Construction.