I did a search and turned up one two year old thread, so I figured it might be ok to resurrect this question!

I'm doing an adeptus arbites conversion to serve as an inquisitor lord (judge) and retinue. It's based on the Neromunda Enforcers of course and some classic arbites models. The only thing I'm stuck on is Acolytes. I can't think of any way to make a science fictionish man catchter for them. They're keeping their shotguns, so it will be something that either gets strapped on their back with some green stuff or can be modelled like an underbarrel launcher onto the shotgun. I was thinking something that looks like a miniaturized version of the little tool you use to pick up screws could be put on the gun, but can't find anything appropriate.

Any ideas?