Board Thread:Speculation House/@comment-226878-20140806000834/@comment-10380701-20140807045711

I'd assume that AKs are not designed to combat Grimm, as upper tier Grimms are tough enough to withstand certain attacks.

Like say, Blake's Gambol Shroud barrage didn't scratch the Nevermore, but it shredded Aks like a hot knife through butter.

The Taijitu has some rather tough hide as well, as it took it's own fangs to kill it.