One double tap for each and you are looking at 18 to 30 rounds. This is a perfect example why the government does not need to be regulating the capacity of magazines.
When society decided to take automatic weapons away from the citizens, I don't think anyone envisioned gangs of ferrel yout's roaming the streets. Times have changed and automatic weapons have a legitimate place in legal self defense.
You shoot two or three....the others would have beat feet.