The Agar Gun, if not often called a "coffee-mill gun" due to its resemblance into a espresso mill, was invented by Wilson Agar at first in the US Civil War. The weapon featured mechanized loading using a hand crank connected to a hopper above the weapon. The weapon featured an https://machguns.com/product/lot-1442-hr-model-50-reising-class-iii-nfa-cr-fully-transferable/