Interchangeability Test: A weapon is a Copy or Duplicate if it has a receiver that is the same as or interchangeable with the receiver of an Enumerated Weapon. A receiver will be treated as the same as or interchangeable with the receiver on an Enumerated Weapon if it includes or accepts two or more operating components that are the same as or interchangeable with those of an Enumerated Weapon. Such operating components may include, but are not limited to: 1) the trigger assembly; 2) the bolt carrier or bolt carrier group; 3) the charging handle; 4) the extractor or extractor assembly; or 5) the magazine port.