I have an old 1979 Remington 582 tube felt bolt action rifle. Im looking to add a peep sight to the back of the receiver. The problem im having is that the receiver doesnt have any scope holes in the top. All i have is the standard scope rail. So far ive only found sights that screw into the top. Id really perfer to not alter the gun if I dont have to. Has anyone one seen anything like this before?