plawolf
Lieutenant General
but you have to be in a state that does not frown on it for some ridiculous reason. additionally I forgot to Correct Wolf, there is no evidence outside of Hollywood movies that a .50 cal semi auto can down a modern helicopter. It's a myth. any modern combat chopper is armored specifically against .50 cal machine gunfire.
Attack helicopters might be armoured to take 50.cal hits, but certainly not transports. Is a 50 cal semi auto likely to down a transport helicopter with a few shots? Probably not, but it most certainly can shoot one down, and with a far greater probability than any other small arms your average infantry squad might be carrying.