In the latest (and all previous) version of the "Assault Weapons Ban", the definition of "assault weapon" is generally a "semiautomatic firearm that utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round; and requires a separate pull of the trigger to fire each cartridge"


If an AR-15 is so undergassed or ungassed due to manipulation of the gas block so that it requires manual manipulation of the charging handle to extract the fired cartridge and chamber the next round, it's no longer a "semiautomatic firearm" and should be exempt from any legislation, right?