Gives the single-shot or lever gun shooter the period looks of a traditional, tang-mounted peep sight plus new adjustability features that allow fast changes from short- to long-range settings. Great for the cowboy shooter who wants to use the same gun in cowboy competition and long-range side matches, or as an alternative to vernier-type sights on single-shot rifles used in BPCR and other long-range competitions. Each sight comes with a post that is the correct height to regulate the same as the original factory iron sights. Click adjustable for windage and elevation; each click is approximately ¼" of adjustment at 100 yards. For larger elevation changes, you can easily swap in a higher or lower post (available separately); choose a lower post for close-in shooting and a taller post for longer ranges. All components are precision CNC machined from 4140 steel, with critical parts heat-treated for extra strength.