I am the owner of an FNP9 and am beginning to feel I made a big mistake in purchasing this pistol. The lack of aftermarket sights and holsters for FN pistols is depressing. The only company currently making night sights for my FN9 is Ameriglo. Why haven't the rest of the sight companies started making sights for the FN pistols? Is there something about FN they know that I don't know? I really wanted the HiViz sights (green) but still no deal for FN!! The factory apparently uses Trijicon nite sites on the pistols that are equipped with them. Can I buy those sights from FN?