Washington allows open carry without a permit. Carrying in a vehicle requires a CCW permit. Open carry of long guns in vehicles is illegal. Concealed carry permits cost $52.50 and are valid for 5 years.
RCW 09.41.050 (in vehicle)
What is Open Carry?
Open carry is the ability to carry a gun in plain view. Some states require a permit to open carry, and some do not, but most have restrictions on where it is legal to open carry.