CVLIFE Bore Sight Cal 223 5.56mm Rem Gauge Red Dot Boresighter with Two Sets Batteries

Class IIIA laser; less than 5mW Light and compact .223 REM Boresight Faster gun zeroing, reduce cartridges and shells wasted Easy to sit perfectly in the bore; Sturdy brass construction High accuracy, sighting range is 15 to 100 yards