Aimshot MBSKIT1 Modular Rifle Boresighter BS223/AR243/AR3006 Brass
http://www.tandktactical.com/shop/669256223023-aimshot-mbskit1-modular-rifle-boresighter-bs223-ar243-ar3006-brass-945
http://www.tandktactical.com/web/image/product.template/945/image_1920?unique=a79095f
This kit includes BS223 laser bore sight module as well as the AR243 and AR3006 arbors to cover most of the major calibers.
