The domestic manufacture of new machine guns that civilians could purchase was effectively banned by language in the Firearm Owners Protection Act of 1986 (also known as "McClure-Volkmer"). The language was added in an amendment from William J. Hughes and referred to as the Hughes Amendment.
After the Battle Of Bunker Hill, Gen. William Howe took control of all the British Redcoats in America. It also boosted the confidence of the British troops.
Answer:
When the economy collapses