I've finnished this model some time ago and realized I didn't share it with you.
Soviet army recieved over 20 000 WLAs and almost half of the number was then equipped with Ural sidecar (equivalent of BMW R12 sidecar). One of the most interesting versions is the one with mortar:
Initially the build build was similar to this one (Harley WLA Military Police - scratch build in 1:72) so I think there's no point showing the first steps again. Anyway, here is how the build proceeded: