KT-Master AimSHOT Master Rifle Bore Sight kit- This kit includes our new modular 223 Green laser bore sight (BSB223G) and all 16 of our rifle arbors for a full kit! You will be able to bore sight most standard SAAMI calibers with this kit. From WSM to Weatherby, we have you covered. Comes in two zippered pouches, the two modular 223 green laser bore sight runs on two AAA batteries and will power the green laser for hours! Master Rifle kit includes the BSB223G Green laser with external battery pack, and the following arbors: AR243, AR264, AR3006, AR3030, AR762, AR20GA, AR12GA, AR22-250, AR270WEA, AR270WSM, AR300WEA, AR300RSUM, AR375HH, AR7MWSM, AR8MM, and AR50.