I have started work on an Ork Gunner for my Looted Rhino. I have used a resin Twin Big Shoota from Forge World. A plastic Ork body and an Imperial turret ring.
Here is how it is looking with the gunner. Not sure what I am going to do with the other hatch space.
I am quite pleased with how the model is looking, I still need to do a lot to the paint job, but conversion wise I like the result so far.