$50
Scope mount with quick-release mounting on the standard saiga rail, allows to install an optical sight with a pipe diameter of 25.4mm. The sight is fixed by means of the rings, and the final tightening is made with a screwdriver, if necessary, the screws can be treated with an anaerobic thread retainer. The main advantage of the scope mount is the ability to remove optics during transportation and storage in a small safe. Before installing the scope mount, it is necessary to adjust the tightening of the lower locking screw (the scope mount should be very tight, in the tension go to the side bar) and then fix the lever.
example of installation on rpk
Option #2
Option #3