[DRG]

There are a dozen or more T-72BM's in the OOBs and about the same number of Invar in 14 different OOB's

WHICH ONE were you using ? In the test I ran both the Invar and invar-M did not make a MG sound then I set up a second test where everything was turned off but the Invars and they did but there is nothing in the weapons or unitweapons data that call for a sound like a MG

EDIT.. set up a test sceanrio and both the INVAR and INVAR -M I used.....which were the same units I used the first time from the Russian OOB...... ALL gave a normal explosion to the missles..... NO MG sound

Some weird once-in-a-while buglet. If you get one that is repeatable after a save, post it and we might be able to debug it