Thats wierd that it wouldn' t work. I just clicked on it from my post and it went. Anyway, just get on the Weaver website and find the Pivot mounts and rings. I believe they have an application of the pivot mounts for Mauser 98' s which is what your FN is basically, right?
With the pivot rings you just flip the scope over to the side (to the left for a standard right handed bolt) and you then have the unobstructed view of your irons withou even removing the scope at all. a simple flip back to the original position.......snap it down,,......and you' re ready to go with the scope again.