Dear eSim
In the F8 observer view of the Piranha V AAAMS, when it fires the main mortar it is using/calling the "x_MortarHvy.wav" when logic/continuity dictates it should be using the "a_MortarHvy.wav"
Side by Side test with all other 120mm platforms, they appear OK (Have added to test scenario)
Here's 2 different mortar sounds for you
a_MortarHvy.wav
x_MortarHvy.wav
I've even written a test case for you
Fix / Raise bugzilla entry
Edit:
Added zip folder with sounds and test sce
Mortar test.sce
Mortar test.zip