I have platinum launchers, I've shot some shit down.
Soon as I die to ze choppa or VTOL, I'm straight away switching to an LMG with Cold Blooded.
I blast 75-100 rounds into it and it's not dead, but close to it depending.
For extra effect, add the armor piercing rounds that boost damage vs vehicles.
You can have those pesky flying bringers of death down in mere seconds.
And Ghost for UAVs. ๐