What could it be...?
Hmm... PADBHAR? 9R per B. 2S per P. Hmm...
[Bipod too, but that aint made yet]
Pump action double barrel heavy assault rifle. 12 rounds per barrel. 2 shots per pump. Can fire one at a time or both at once. Removable Magazine/Hopper/Stripper Clip. Bipod to come.