The S-300 while it is impossible, because it has not yet been removed from service in Hungary!
Are you sure that Hungarian army have any S-300 systems fielded ? I don't think so !
You are confusing between S-300 and 2K12 KUB-M3 (SA-6)
if you want!),
2K12 KUB-M3 (SA-6) could be done, after removed from service in Hungary, also realistic to the switch.
If you need more info., take a look here
If now C-300 and C-400 were retired, they were immediately made, are included in the simulator!
Do you think "it's an automated operation!
", and it do that .
.by it self ? .
if you didn't know, it need a lot off .
to be done !