This is the 4-step rear sight elevator lever action Winchester rifles. This elevator fits 1873, 1886, 1894 (pre and post 64) and 1895. Winchester called this the 1B elevator. It fits into the slot on the sporting rear sights rifles. The width is 0.10 and the highest adjustment point is at .165-.170 inches. (Highest point behind last notch is .212)
