The Agar Gun, normally called a "espresso-mill gun" as a consequence of its resemblance to your espresso mill, was invented by Wilson Agar firstly in the US Civil War. The weapon highlighted mechanized loading using a hand crank connected to a hopper over the weapon. The weapon highlighted one barrel https://machguns.com/product/lot-1460-military-armament-corporation-m10a1-smg-silencer-class-iii-nfa/