This kit includes the original BS223 laser bore sight module as well as the AR243 and AR3006 arbors to cover most of the major calibers. Will bore sight any 223 based caliber as well as any 308 based caliber (243, 7mm08, 338 Fed, 260 Rem) as well as 30-06, 270, 280, 25-06, 300 Savage with the included 3006 arbor.