a precision mount has two split rings that directly engage a telescopic sight . the front split ring is mounted on shoulder bolts to provide a pivoting engagement , while the rear split ring is held within a slide and adjusted vertically therein using a precision adjuster . a balanced lock is provided which ensures alignment is preserved during position locking , subsequent to adjustment . windage is provided on a separate adjustment between the sight yolk and the rifle attachment , thereby isolating windage from position locking and simplifying the appropriate adjustments . precision connections are maintained at all critical locations , even after shock or recoil , by using precisely dimensioned pins and mating holes in association with standard bolt fasteners .