Assuming the stock is original, which it looks to be, it will be numbered to the gun with a "type" designation after the serial number.
22K range is around 1908.
I don't know much about the typeG's myself - Dons will likely help out.
The front sling swivel looks like it could be a later fitment. I would assume the sling swivel would have been with the barrel band which runs through the forend.
This looks much like an African model but with a shorter barrel and a military type floorplate release.
Looks very interesting. Better pictures of the gun, especially the rear bridge, would be great. The diopter sight may be quite interesting.