Editing Jagdpanzer IV (section)

===Main gun===
Armament consisted of a 7.5&nbsp;cm main gun firing [[Glossary of British ordnance terms#Fixed QF|Fixed QF]] 75 × 640mm R ammunition, originally intended to be the Pak 42 L/70. Due to shortages, older guns were initially used, the [[7.5 cm PaK 39|7.5 cm Pak 39 L/43]] for pre-production, and the [[7.5 cm PaK 39|7.5 cm Pak 39 L/48]] for the initial production variant. These were shorter and less powerful than the Pak 42, and also carried a [[muzzle brake]].

Installing the much heavier Pak 42 meant that the ''Jagdpanzer'' IV was nose-heavy, especially with the heavy frontal armour. This made them less mobile and more difficult to operate in rough terrain, leading their crews to nickname them ''Guderian-Ente'' ("Guderian's [[duck]]"). To prevent the rubber rims of the roadwheels being dislocated by the weight of the vehicle, some later versions had steel roadwheels installed on the front.

The final prototype of the ''Jagdpanzer'' IV was presented in December 1943 and production started in January 1944, with the Pak 39 L/48 armed variant staying in production until November. Production of the Pak 42 L/70 armed variants started in August and continued until March/April 1945.