Lyman .223 Laser Boresighter By Lyman ITEM DESCRIPTION now offers Lyman .223 Laser Boresighter. This laser boresighter will make zeroing much faster and allow you to have more time aiming at the game you want to bring home. Specifications & Features: Red Laser wavelength 635-655nm Max output Batteries included 15-100 yard sighting range Brass construction Class IIIA laser Ideal for accurate bore sighting