The Redfield / Leupold style of bases and rings are a standard that non-weaver mounting systems are measured by. They can be one or two pieces, and are steel, sleek, and strong. They are reliable and trouble free. There is almost as much interchangeability between manufacturers with these systems as there is with the Weaver style. Unlike Weaver style rings, Redfield / Leupold style rings are not detachable. The top half of the rings must be separated to remove your scope.![]()
The front ring is kind of a press fit, with a protruding, beveled rectangle of metal under the ring, turned tightly into a corresponding dovetail slot in the front base. Normally, the two halves of the ring are loosely assembled, and a scope ring tool or a one inch wooden dowel or a screwdriver handle is inserted between the pieces to gain leverage to turn the ring into the base. This can not be done by hand.
The rear ring sits flush against the base and is held there by two opposing screws tightened into it. The screws have a leading edge that fit into corresponding slots in the ring. The base screws are tightened into each other, squeezing the ring tightly and immovably. By backing out one screw and tightening the other, the ring moves laterally on the base, effectively acting as a windage adjustment. This is of minimal importance unless your base screws are tapped into your gun's receiver crooked, or there is some other problem that makes your gun shoot left or right so much that it can't be easily corrected with minor scope adjustments.