SAW Ammo Pouch
 

I picked up an A&K M249 recently, mostly as a display piece. I'm looking to replace the oversized box mag that comes with it, ideally for cheap. I have stubby arms and I can't hold it properly with the standard box. I know there's some functional options like the MAG nutsack pouch, but since this is for display, I'd like to save some cash and make it look more authentic by adding a dummy belt and a bag to it. I know ArmyIssue sells 20rd belts, so that's not an issue. Finding a surplus (or not) pouch is proving more difficult. Anyone have any suggestions on where to look?

For clarification: I mean a soft ammo pouch like pictured, not a pouch for the box mag that's already on it.
http://i209.photobucket.com/albums/b..._Ammo_Pack.jpg

It's referred to as a nutsack, and it's the "100 round pouch" or "1000 round pouch" for airsoft
Pretty sure they are readily available for CA style 249s, check ehobby under auto loading magazines

You can add a dummy belt on a airsoft nutsack to hide the feeding tube very easily..