Section 166.432 - Definitions for ORS 166.412 and 166.433 to 166.441(1) As used in ORS 166.412, 166.433, 166.434, 166.435, 166.436 and 166.438, "criminal background check" or "criminal history record check" means determining the eligibility of a person to purchase or possess a firearm by reviewing state and federal databases including, but not limited to, the: (a) Oregon computerized criminal history system;(b) Oregon mental health data system;(c) Law Enforcement Data System;(d) National Instant Criminal Background Check System; and(2) As used in ORS 166.433, 166.435, 166.436, 166.438 and 166.441: (a) "Gun dealer" has the meaning given that term in ORS 166.412.(b) "Gun show" means an event at which more than 25 firearms are on site and available for transfer.Amended by 2018 Ch. 5, § 8, eff. 1/1/2019.Amended by 2015 Ch. 50, § 6, eff. 5/11/2015, op. 8/9/2015.166.432, 166.433 and 166.445 were made a part of 166.432 to 166.445 by law but were not added to or made a part of ORS chapter 166 or any other series therein. See Preface to Oregon Revised Statutes for further explanation.