Norwegian 1906 Krag Jorgenson Carbine. ( ID Help )

[butlersrangers]

Romad - I believe the cut-off you seek is the example shown in the posted picture.
(I copied the photo from the Numrich web site).

The Numrich listings are very confusing, because they mention both "U.S." and "Norwegian" in the description.
All the cut-off levers, shown on the Numrich site, appear to be for American Krags, except the picture I borrowed.

It would be interesting to see a good 'side-photo' of your Receiver Sight.
It appears to be a Redfield sight.

Something was likely 'altered' in order to mount a U.S. commercial sight, on the left-side of your Norwegian receiver.
Possibly, there is an 'added' drilled & tapped mounting hole.

Note:
If there was an 'alteration' to your receiver to hold on the side-plate, it might prevent re-installing an original cut-off lever.
Buying one may be a needless expense.

As issued, the Norwegian side-plate is held in place by the magazine cut-off shaft, not with a screw.
The U.S. Krag side-pate is retained by a screw.

A longer replacement side-plate screw is used to retain Redfield 'no-drill' sight models on U.S. Krag rifles.
(I don't recall Redfield or Pacific offering a "No-Drill" peep-sight model for the Norwegian Krag).

The attached photo shows three distinctive features on a Norwegian cut-off lever, that are very different from U.S. levers.