When cities run gun buyback programs, they pay a vendor to run the program and destroy the guns. Despite their marketing to the contrary, those vendors turn out to have been reselling the guns, as a matter of course, minus the receiver. 98% are resold. https://www.nytimes.com/2023/12/10/us/guns-disposal-recycling.html?unlocked_article_code=1.E00.JnYH.TqkHjf6uP1oW&smid=nytcore-ios-share&referringSource=articleShare