Hey Strango,
Will something like this work? You can find it under Empty-MAPS-Everon Map. If it will work for you, feel free to use it in your addon. You'll have to write a new config, though. The quick config I wrote for it has it defined as a thing, and you'll want it defined as a weapon.
EDIT:
The map may be a little too long. If it is, tell me, and I will shorten it. Also, the map has no weight, so if you shoot it, it will fly off into space. If you want the map to have weight, again tell me, and I will add it.