An Austin, Texas gun rights activist, Michael Cargill, sued ATF in 2019, in the U.S. District Court for the Western District of Texas, similarly challenging the authority of the agency to classify bump stocks as illegal machine guns. Cargill is also represented by the New Civil Liberties Alliance.
Michael Cargill, a gun rights activist from Austin, Texas, sued the ATF in 2019 in the U.S. District Court for the Western District of Texas, challenging the agency's authority to classify bump stocks as illegal machine guns.  Cargill is also represented by the New Civil Liberties Alliance.