Sorry, I don't understand the question.
The rifle is a K98 (K98k, I presume). Sight blade missing, so you installed a "standard German front sight blade", which would be for a K98k. So what's the problem? All German-made Mausers from my M1871 to the Israeli use the same front blades (apart from some carbine types with integrated "ears", which may cause a problem). As far as I know, there is no specific "Norwegian
Mauser" front blade. Please enlighten me if I have misunderstood something.
Patrick