Nihowban Red Dot Bore Sight 9mm Laser Boresighter with 3 Sets of Batteries 

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• 【Safe】Class IIIA laser, less than 5mW 650nm red laser. safe and harmless. Caution: Keep the Red laser beam away from eyes.
• 【Sturdy and Durable】Sturdy and durable brass construction, it is not easy to deform under high and low temperature environments, which can ensure the accuracy of the bore sighter.
• 【3 Sets of Batteries】 Comes with 3 sets upgraded batteries. Each set lasts up to an hour. Please remove the batteries after use.
• 【High Accuracy】The fastest red dot laser zeroing and sighting system and save you time and cartridges. Calibration range 0-110yards.
• 【Application】The 9mm bore sight is made to fit the 9mm chamber, caliber specific.