New High Quality Aluminum 12 Gauge Cartridge Laser Bore Sighter Boresight
Fits 12 Gauge Cartridge. Sighting or zeroing in your iron sights, red dots, or scopes quickly and easily. Insert the entire assembly into the chamber, gently close the action, and aim at a target 20-30 yards away. Adjust windage and elevation of the scope or sights so point-of-aim is zeroed on. Included 3 x LR44 Button Cell Batteries.