User blog comment:Willbachbakal/Co-Op Weapons: Syringe/@comment-3195894-20110814230746/@comment-1330314-20110815140852

I took a look at the Magnum Express, and it's freaking enormous. Could definitely work. To change things a bit, the barrel could be changed to a pepperbox gun design (so multiple rotating barrells). In any case, that's a great idea of yours.

The Cheiroballista may be a bit too big, though, even for a Big Sister... However, the ammo types sound nice. I was thinking of an underslung mini-harpoon gun, like the harpoon in the Big Sister's off-hand in the final concept art, except that you'd be able to fire it.