I just looked at the feral myself. If it were me, I'd still go with the spike, as it's the correct one for the rifle due to the feral cutout. If it doesn't quite fit the stock, that can be remedied with some light sanding work to the groove with a Dremel. Of course, I'm not adverse to making something fit, if it doesn't out of the box. Some people might not be as comfortable doing that as I am. Who knows if a paratrooper blade bayonet is even going to be found or if it will be at a reasonable price?