"No brass or ammo sergeant!" As a drill instructor walked by, I and every other trainee were required to shout this. Only unloaded M-14 rifles and pockets without live ammunition or spent brass cartridges were to leave the firing range. Weapon and ammunition control was strictly imposed from the top down in the year 1964 at Fort Ord, Calif.
My drill instructors were employees of the United States Army. They were vigorously enforcing the rules and regulations of an arm of the government of the United States of America. Isolated strict weapon and ammunition control by our national government has been a reality for decades.
A national law reducing the capacity of legal citizen owned ammo magazines will not terminate the Republic or the Second Amendment. Smaller citizen ammo magazines are not the same as the decades-old "no brass or ammo sergeant."