223/5.56 laser bore sight module can be used with external battery box, or with 3-L41 batteries. Designed to make it quick and easy to bore sight your rifle chambered in .223/5.56. This laser is also the basis for the AimShot rifle caliber laser bore sight system and is used in conjunction with the AimShot Rifle Arbors to bore sight most major rifle calibers. Features Can be used with standard L41 or External battery box with 2 AAA batteries Boresights .223 Remington or related cartridges Can be used with optional AimShot arbors that utilize the .223 diode Specifications Maximum sighting range 100 yards Battery AAA 2 or L41 3 Included Aimshot 223 Remington Modular Laser Bore Sight with Standard and External Batteries Modular Bo