LaserMax LMS392C Guide Rod Battery Pack LMS-392 1.55V Silver Oxide 38-45 mAh Compatible w/Glock 17/S&W SigmaBattery Pack 1.5 volt silver oxide replacement batteries for guide rod lasers that fit Glock 17, 19, 20, 21, 22, 23, 31 w/sn# prefix AA, AAA,...