Ultimately, it's always the case that anything that can be done will be done. No 'laws' can change that. What weapon has ever been invented and never used?
Discussion
Actually, the "Standschütze Hellriegel" is a weapon that was invented but we know very little about it or if it was ever used 😂
https://en.wikipedia.org/wiki/Standsch%C3%BCtze_Hellriegel_M1915
Mit dem Namen wäre es auf jeden Fall kein Verkaufsschlager geworden: "Maschinengewehr des Standschützen Hellriegel"