166.250. (1) Except as otherwise provided in this section or ORS 166.260, 166.270, 166.274, 166.291, 166.292 or 166.410 to 166.470, a person commits the crime of unlawful possession of a firearm if the person knowingly:
(a) Carries any firearm concealed upon the person;
(b) Possesses a handgun that is concealed and readily accessible to the person within any vehicle;
(4)(a) Except as provided in paragraph (b) of this subsection, a handgun is readily accessible within the meaning of this section if the handgun is within the passenger compartment of the vehicle.