Crosman Diopter Sight System
This sight system will mate up perfectly with the Crosman Challenger air rifle it was made for . The iris sizes are a perfect starting point for 10 meter air rifle competition.
10 clicks per rotation
Windage and elevation click values 1/4 MOA when the front and rear sight are 27" apart.
Will mount on 11mm dovetailed receivers.
Includes a blinder and 3.8mm, 4.0mm, 4.2mm and 4.4mm iris's.
Engineered in the USA