About this item
* Package Includes: One .40 bore sight and 6 batteries 
* Faster Gun Zeroing: Easy to use, reduce cartridges and shells wasted 
* Super Long Battery Life: Upgraded battery, made with new energy technologies, each set of battery can be used continuously for more than 2 hours 
* High Quality: Made of sturdy brass construction, the boresighter is high quality 
* Laser Class: Class IIIA laser; 5mW or less