What do mean?

You cant hunt on tribal land.

If you are non native state law would apply. So if you carry a concealed weapon and have a WA state concealed weapons permit you should be fine. Or if you carry it on your hip and are not a convicted fellon you should be fine.

Whatever sate law says should be fine.

Washington is a public law 280 state which means if you are non native tribal laws do not apply to you on tribal land. WA state and federal laws apply.