US-DEALS 7.62 x 39mm Boresighter Laser Bore Sight Cartridge Fits 7.62X39MM chambers rifle or pistol. Semi or bolt action 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 Class IIIa 635nM Less Than 5mW Avoid Direct Eye Exposure to Beam