EZshoot Bore Sight 223 5.56mm Red Laser Boresighter with 4 Sets of Batteries

About EZshoot Bore Sight 【High Accuracy】The 223 bore sight has high laser accuracy which helps to zero in quickly, saving your time and reducing cartridges wasted. 【Extra Batteries】Comes with 4 sets of batteries (12 AG3 batteries), and each set lasts up to 1.5 hours, providing a longer sighting time. 【Sturdy and Enduring】Premium brass construction, strong anti deformation to ensure the accuracy of the 556 laser bore sight. 【Application】The bore sighting laser is perfectly fit in .223 5.56mm chamber, caliber specific. 【Specification】Class IIIA laser, less than 5mW. 223 5.56mm Red Laser Bore Sighter Description Extra Batteries Supplied EZshoot red dot bore sight comes with 4 sets of batteries in total. 3pcs upgraded AG3 batteries per set and each set can last up to 90 mins. 4 sets of batteries are packaged in 2 little cases, convenient to store. Do not have the On/Off switch. The bore sighting laser turns "ON" automatically when batteries are installed and will be "OFF" only when ba