Arty, perhaps has the highest percentage of that, but then there isn't much difference. M109 is proving to be more successful and reliable than the much more modern German and Polish SPH.
In case of AVLBs I don't think you can afford a breakdown. The outcome of a battle does not depend as much...
@PanzerKiel heard from an engrs officer that the M47 AVLBs are very unreliable and breakdown often especially around areas such as bahwalpur since they are air-cooled.
Imagine 3rd gen AKs getting delayed because of 50s M47s.
Will AK production line be shifted to VT4? Also will there be an extension of HIT to produce more VT4s or the production capacity will remain 50 as was in the case of AK?