Firefield 223 Rem/5.56 NATO In-Chamber Bore Sighter, Brass - FF39016

This in-chamber bore sighter is designed for 223 Remington/5.56 NATO rifles and uses a red laser (632-650nM wavelength) to help align your scope quickly and accurately. Constructed from brass and includes 2 AG5 batteries. It provides a fast, convenient alternative to shooting multiple rounds downrange for initial scope zeroing.