Check the listing for details. Bore Sighter 243/308WIN 7mm-08REM Laser Cartridge Sight boresighter Copper Scope. Color: Copper, Condition: New. Listed at 12.70 USD. Bore Sighter 243/308WIN 7mm-08REM Laser Cartridge Sight boresighter Copper Scope.243/308WIN 7MM-08REM Cartridge Laser Boresighter Brass Bore Sight For Rifle Description: Feature: Easy-to-use, self-contained boresighting system fits in the chamber of your rifle or pistol 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 scopes, holographic red dot sights, and variety sights. Durable, machined brass housing looks like a cartridge case but actually contains the entire laser system and batteries. Insert the batteries and screw the cap on the housing to turn on the laser; 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 windage and elevation of the scope or sights so point-of-aim is zeroed on. Specification: Material: High Quality Aluminium Laser Wavelength: 632-650 nm LED Type: Visible Red Laser Sighting Range: 10-75 yards Dot Size: 1.5" @ 100 yds Laser Beam: