eldirector
Grandmaster
No, trespassing on private property with a gun would cause a reasonable person to perceive an implied threat.
If I had a sign on my property indicating the such, and you came into my home with a gun (passing through my residential metal detectors) it would be reasonable for me to believe your intentions were not peaceful.
Does that change if I was an invited guest (a customer), who showed no other indication of being a threat other than simply possessing a "banned" item?