GF Diopter Sight
It could also be ordered by civilians as an option for their CG63 rifles. The installation requires more modifications to the receiver than a "normal" diopter sight does. For the GF elevation to reach its lowest point, a groove has to be milled into the receiver.
For information on disassembly and assembly, click here for an interesting post on the swede section of the gunboards forums. The post also contains a number of attached scanned images of the original instruction manuals.
Etiketter: GF diopter