I don't think I've posted this before. I just finished modifying the .50 cal, which is from the new Sherman kit. It has an approximation of the rigid mounting which was a feature of the M8, and I carved away the solid grip (it's still pretty crude). I try to mount all my MGs so that the barrels point downward, to minimize the chance of breakage.
The M8 has a few missing details added, like the barrel inside the mantlet and the antenna mount (which is slightly too far forward).
One point worth mentioning is that the moulding seams on the jerrycans have been left intact, to represent the joins on the real thing.
I'm still looking for some appropriate plastic crew figures.