Thanx for the response. The carnifex arms were originally supposed to look like biological mini-guns.....but too many failed attempts later and I decided to do something simple and not waste so many bitz. The basic arms are the new monstrous scything talon arms cut at the wrist. Then, take the barrels off of the new barbed strangler and attach to the stubs with a little green stuff. Take the barrels of the devourers and mount them on the top and bottom of the strangler barrels. Then, take the ammo feed arms from termagant fleshborers and attach them to the back of the devourer barrels with some green stuff to smooth the transition. Viola!
Yeah, there is subtle shading and such for the armor, but the pics don't show it well. I went with something simple since the GT is the first weekend of June. Afterwards, I'm going full-blown with these guys and see how they come out. For now, I'm using the GT as an excuse to paint them as I've had them since the codex release and didn't do anything with them. Ahhh.......motivation; it's a harsh mistress.