Alas, you've put the mortar together upside down but, as you said moderns aren't your thing.
Sizewise they fit perfectly with the Rhodesians, as well as the USMC Force recon, French, etc etc. According to Nic, there are more variants to come of the ZANLA guerrillas, with some bareheaded figures in the next batch. A ZANLA crew for the DshK is also planned. I've done my bit and requested some chaps armed with SKS carbines, RCL with crew abd some crew for the 82mm mortar.
I suspect these will see a wide range of duty in various African imaginations. They'll also make the ideal opposition for the forthcoming Portuguese. As always, lovely figures from Kosta.