ORS 166.265: Manufacture, importation, sale or transfer of undetectable firearm.

(1)(a) A person may not knowingly manufacture or cause to be manufactured within this state, import into this state, or offer for sale, sell or transfer, an undetectable firearm.

      (b) A violation of paragraph (a) of this subsection is a Class B felony.

      (2)(a) A person may not knowingly possess an undetectable firearm.

      (b)(A) A violation of paragraph (a) of this subsection is a Class A misdemeanor.

      (B) Notwithstanding subparagraph (A) of this paragraph, a violation of paragraph (a) of this subsection is a Class B felony if, at the time of the offense, the person has one or more prior convictions under this section or ORS 166.266 or 166.267.

      (3) A person convicted under this section shall forfeit the undetectable firearm.

      (4) As used in this section, “prior conviction” includes a conviction for a violation offense.