So much twaddle and dancing around definitions. You could definitely qualify for a spot on Trump’s Supreme Court.
All they are a modification to turn a semiautomatic gun into a full automatic weapon. That’s it. All the intricate dribble into the contrary doesn’t change that. Water is wet, sky blue, and modifications allowing automatic fire are machine guns.
You went into a ton of detail, thank you. But it is meaningless under the original definition of the act.
“The term shall also include the frame or receiver of any such weapon, any part designed and intended solely and exclusively, or combination of parts designed and intended, for use in converting a weapon into a machinegun, and any combination of parts from which a machinegun can be assembled if such parts are in the possession or under the control of a person.”
A bump stock modifies the frame of the gun which converts it into a fully automatic weapon. Don’t just get stuck on the trigger part of the action. The act covers everything, you just can’t cherry pick a single clause and ignore everything else. Otherwise they just might make you into one of Trump’s Supreme Court justices.