UP100 Hunting 30-06 .25-06 .270 Cartridge Laser Bore Sighter Hight Quality Brass Class Type: Class IIIa 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. Precision accuracy,Material: Brass Maximum output power: &lt;5mw, FDA & Amazon Standards Type: Class IIIa Laser wavelength: 635-655 nm. ; Operation: On/Off End Cap