On map MLRS/Uragan/ASTROS etc etc etc

[Marcello]

Originally Posted by Wdll

Since you are talking about MLRS, why most MLRS units do not have any non CM ammo? Some thankfully still do (OOB), but most don't. I have no idea why though.

Most simply don't have it or it is not a common ammunition.
It is probably only the american MRLS that was born as a dedicated CM carrier with no HE option.
IIRC the Uragan primary ammunition was either HE or scatterable mines (which was planned to drop right on top of advancing enemy units). BM-21 was an HE carrier, though more ammunition types were introduced later.
CM may not be availble because it was not technologically viable at the time or too expensive to purchase later on or not common enough in the inventory to warrant an additional variant including it.