The AimShot Modular Battery Pack for the AimShot 223 Laser is an essential upgrade for your laser bore sighting needs. This power pack is specifically designed to replace the traditional three small watch batteries with a more efficient external battery pack system using two AAA batteries. This configuration allows the red laser to operate for up to 20 hours providing extended use without frequent battery changes. The battery pack is compatible with all AimShot and SpeedAim 223 laser bore sight models making it a versatile addition to your shooting accessories. Note that this product is not suitable for green laser models. With its convenient power pack style and nominal voltage of 3V this non-rechargeable battery pack is a reliable choice for those looking to enhance the performance of their AimShot 223 laser bore sights.