Ray's comment was made in the context of removing the occualar assembly to use a Stith mount on a Remington 722 that was not factory d&t in the rear receiver bridge. The early 722s were factory d&t for on the left of the rear receiver ring for receiver/peep sights, so the Stith and early B&L Bal-Var rear bases mounted via those factory provided d&t holes.

Jeff