"...to acquire, keep and bear arms."
So someone who has acquired arms can keep and bear them on or in your real property, store, tavern, etc whether you agree or not since you didn't put a limit on the right.
What if they acquired them illegally, as in "stole them"? Does the right to keep and bear arms include the right to keep and bear arms that one has acquired by theft? Or is that excluded from the right?