M7 Priest Self-Propelled GunThe 105mm Howitzer Motor Carriage (HMC) M7 was the workhorse of US Army motorised artillery units, allowing unparalleled close fire support. Built on the ubiquitous M4 Sherman hull, the open topped superstructure held a 105mm howitzer supported by a . 50 cal heavy machine gun on a ring mount a characteristic which inspired the British to nickname the M7 as Priest due to its pulpit like appearance. Almost 3,500 M7s were produced during WWII. In US