Oh, I was just showing it off. Preferably, I'd rather have something small and light. Would you be against something like this? 
[img]http://fc09.deviantart.net/fs71/f/2012/052/d/5/d5c1a50ea18caf455952b05f0d27e9c1-d36g1bj.jpg[/img]
It would probably be roughly the size of a cubic foot overall, and would be rather fragile. Plus, it has a bit of a lack of mobility, so it couldn't go through ruined areas. Still, it would have decent firepower, yet not attract unwanted attention.