Era-Tac Adjustable-Angle Scope Mount (0 to +70 MOA)
This is a unique, variable-angle scope mount (with integral rings) that adjusts from 0 MOA to +70 MOA pre-load, in precise, ten-MOA increments. Once adjusted and tensioned, there is no play in the system so your elevation is repeatable. This Era-Tac Mount, made by Recknagel (Germany) is a very advanced design that really works.