Board Thread:Off Topic/@comment-26397825-20160103032023/@comment-26397825-20160108072715

...I hope you mean the shaft of the bowgun, because I just looked up images of 'indian katar' and i found not a single instance of a curved blade that could move to become the crossbow arms. Katar's are generally triangular in shape, and even the three bladed versions have three straight, triangular blades. And the flameblade types are all single bladed, and the wavy blade shape would not handle curving enough to make crossbow arms very well.

A picture of which one you are using as your inspiration could be handy here.