Superb Long-Range Accuracy & The Right Period Syling
Rotating, detent-locking disc in the eyepiece lets you select one of eight aperture sizes to match your sight setting to current lighting conditions for optimum accuracy. Change settings with a flick of your thumb; no cumbersome disassembly or loosening and tightening of the eyepiece. Soft rubber ring minimizes pain from accidental contact with eyepiece on recoil. Fits both Universal and Soule-type Creedmoor sights.
Big Book Catalog, Issue:68, Page:313
SPECS: Steel, blued. 1.25” (3.1cm) diameter. Thread Pitch: 5mm x .5 Metric.