So, a few notes/clarifications:
1) You'll find out about Law Enforcement upon entering Whisper Hill.
2) The letter of the law states you can not conceal any weapon.
3) The letter of the law states you can not carry any deadly weapon, UNLESS you're physically carrying it in your hands.
4) If you're leaving the settlement, you CAN carry a weapon on you i.e. you have a rifle over your shoulder because you're leaving town proper to go hunting. Or 'hunting'.
5) You can store and carry weapons on private property (i.e. if you have guns in your cabin, that's ok).
6) Weapons devoted solely to Mayhem are illegal without proper authorization. Most things in the heavy weapons category would be dedicated to this. This also includes explosives, grenades, etc.
Now, that being said, on an Indian Reservation, the law is what the local body says it is, typically. For instance, there's a Federal law on the books that allows officers of the law to carry concealed weapons regardless of state or local law. But, again... grey area since Indian Reservations aren't explicitly listed. Same with employees of corporations. It's currently unknown if the locals are amicable to private security carrying weapons.
For most of you, you'll just have to see
-Ken-