Specifications:
3 aperture interchangeable: 1,0; 1,2; 1,4 mm  and one fixed 4.8 mm
horizontal adjustment range: 6 mm  (80 clicks)
vertical adjustment range: 65 clicks
length:70 mm
weight: 127 grams / 4.5 oz
material : Turable aluminium and stainless steel parts 
 
Our rear sight is strong and with wide adjustment range:
one click horizontally equals 0.075 mm / 0.003"
one click vertically equals 0.05 mm / 0.002"
 
For example, this allows you to adjust impact point @ 100 meters by 12.7mm horizontally and 8mm vertically, if the distance between sights is 50 cm / 20".