Sorry, but these look really poor; I am sure that the head set requires a harness on the Commander's chest (I appreciate that the modeller would have to add his own scale wires). Proportions look a little iffy and as Frank identifies, there's not much point to the figures if you have to replace the heads. The beret cap badges are way too large.
Shame, we always need good and interesting figures,but if you really want to populate a Korean Centurion etc then consider the excellent Ultracast range, especially those in the 44 pat tank suits.
Brian