The 338 Lapua Red Laser Boresight from Osprey Global features brass construction and is activated when the bolt is slowly closed down on the rifle. The precision-calibrated laser dot is projected down the barrel and gets within 1.5" of the center. The laser wavelength is 635-655nm and the laser beam is <5 mW. The dot size is 1.5" at 100 yards and the sighting range is 15-100 yards.
UPC: 040232571329