Conversion - Deff Koptas Big Bomm and Buzzsaw

After picking up a few boxes of Assault on Blackreach I am practically swimming in Deff Koptas. I decided that I wanted some that had Big Bomms and Buzzsaws so I converted up a few using pieces from the Nobz box and a little bit of scratch-building.

For this one I used some plastic tubing, plasticard, and a bit of sculpey. It is a pretty homely looking bomb, but it fits in nicely with all things Ork.

This next one was even easier. I simply cut off a piece of the Big Choppa and glued it to the front of the Copta. Easy as that.

Anyone else got some conversions of Deff Koptas to share? I have about another ten of these things to model up so I am open to ideas.