You’re using logic, which obviously has no place in the law :) The term we’re concerned with here is “firearm frame or receiver”, as defined in the Gun Control

You’re using logic, which obviously has no place in the law :) The term we’re concerned with here is “firearm frame or receiver”, as defined in the Gun Control Act of 1968. Of course, that law didn’t define the term. The ATF did, and that definition is in two places: 27 CFR 478.11 and 27 CFR 479.11. Both are identical, and currently read: > That part of a firearm which provides housing for the hammer, bolt or breechblock, and firing mechanism, and which is usually threaded at its forward portion to receive the barrel. https://www.ecfr.gov/current/title-27/chapter-II/subchapter-B/part-478/subpart-B/section-478.11#p-478.11(Firearm) https://www.ecfr.gov/current/title-27/chapter-II/subchapter-...