you can, by taking the vertex-set from an original model and importing it in the model you want to use. here's the tutorial on how to do it: http://forums.kc-mm.com/index.php?topic=15212.0
I patched it about 10 times, and i think it kinda loops. This messed up version showed up a few patches before it exactly the same:
I seems to be turned a tiny little bit. It needs to be a standard hilt (rectangle) , with a long handle and the thing below the handle needs to be a tiny block...
You would do that just like giving stages animations. Just import the model and the textures, and import the animations you want to use too. I believe somewhere you need to set a value to 2 to make it loop.