High-capacity magazine? Check.
Capable of firing 22 aimed shots in a minute? Check.
A military weapon? Check.
Manufactured during the American Revolutionary War? Check.
The Girandoni was 22-shot, magazine-fed, nearly silent .46 caliber repeating rifle issued to elite Austrian troops from 1780-1815. Thomas Jefferson purchased two of these rifles, which he sent west with Lewis and Clark.
Remember it the next time some know-it-all—perhaps someone who used to have a cable show before he was fired for low ratings—says that the Founding Fathers only knew of muskets.