Might want to specify scale. But even without scale, I can't think of ever seeing a 'normal' war game scale set of separate weapons that included 'booted' long weapons. I'd suggest finding the weapons as stand alone items or sets and then adding the scabbard, seems like a pretty basic sculpting job and easy to add the minimal detail - unless you want an ornate native American type with fancy beadwork and feathers, but even that would be easy enough I'd think. And could be done with Super Sculpey so nothing exotic to work with.
Good luck.