“Will it be enough?”
No, because the local government takes a dim view of citizens killing people. Only the state is supposed to kill people. Therefore, anybody who shoots a Muslim had better be in immanent danger; and not even that will work as a defense in some cities and states. Florida has the castle doctrine. Other states insist you must retreat and only when you can’t retreat (run) further can you shoot. In some places, not even then.
Our government has invited a culture here that boldly says it will enslave us and extract taxes. They have zero intentions of assimilating. We need to get to the ballot box at every opportunity to help prevent being overrun by our “guests.”
Yet many Americans are armed to the teeth. It is called CCW.