AIMSHOT(TM) LASER BORE SIGHTS .223 cal. a Comes with external battery pack that holds 2 AAA batteries a BSB22320X: Brighter laser (632nM wavelength). Also is the laser module to use with all of the AimSHOT arbors to bore sight other rifle caliber weapons. Includes a zippered nylon pouch to hold your arbors and batteries and a nylon rod to help remove the laser from the arbors.