I didnt think far enough to dig where the handle was, I hit the tip of the blade first and just pulled it out. There was no hardware that I could see, not even the pins for the handle. Ill have to look there again next time to see if I can find any other parts, if I dont find anything the only thing I can think of is that it was never put together and may have just been a shipment of parts or something like that.
Im thinking its a bayonet because its so long, but most of the other bayonets Iv seen only have an edge on one side and a blood grove. By looks, it seems more like a dagger, I thought it could have been a dress dagger, but 15 inches seems a bit long for a dress dagger.
I never thought that it could be a shot sword, maybe thats what it is.