Sine Bar and Recoil Lug Drilling Fixture. A "must have" tool for the gunsmith who uses our competition recoil lugs on Remington style actions. Fast and easy to use, it makes pin location a snap. The sine bar feature allows for tilting scope bases for machining and it works great when used with our "Perfect P icatinny Rail" mounts that are adjustable for windage and elevation. Some gunsmiths use this fixture for drilling out 6-48 screws to 8-40, as well. Comes complete with drill, screws and receiver nut for holding recoil lugs in place