UP100 9mm Bore Sighter 9 mm Laser Boresighter Red Laser 9mm Brass Cartridge 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 Maximum output power: &lt;1mw Maximum output power: &lt;1mw Operation: On/Off End Cap Will NOT Work With Any Glock The Laser Boresight do not fit for a 9 x 19 mm, 9 mm Luger/Ruger and 9 mm parabellum.