https://www.planetminecraft.com/project/1-5-1-scale-marder-vehicle-family-marder-a1-a1-a1-1a3-df105/


The Schützenpanzer Marder 1 ("Schützen" carrying "Armour"-ed fighting vehicle "Marten 1") is a German infantry fighting vehicle designed for use with the German Panzergrenadiere units (mechanized infantry specialized for IFV combat). It has been operated by the German Army as the main Panzergrenadiere IFV from 1970s through to the present day. Developed as part of the rebuilding of Germany's armoured fighting vehicle industry, the Marder has proven to be a successful and solid infantry fighting vehicle design. While it used to include a few unique features, such as a fully remote machine gun on the rear deck and gun ports on the sides for infantry to fire through, these features have been deleted or streamlined in later upgrade packages to bring it more in line with modern IFV design (the MG has been moved to be a coaxial, the gun ports entirely welded shut and uparmored). It is overall a simple and conventional machine with one large rear exit hatch and three top hatches for mounted infantry to fire from.

• Marder 1 with Milan: a Milan launcher was fitted to all Marders between 1977 and 1979.
• Marder 1 A1(+) (1979–1982): dual feed for 20 mm cannon enabling choice of ammunition, night vision equipment including image intensifiers and a thermal imager. Infantry capacity reduced to five. Applied to 674 vehicles between 1979 and 1982.
• Marder 1 A3 all German Marder 1s were upgraded to A2 standard, this included substantial modification of the suspension, fuel tanks, cooling system and water-jet cleaning system. Additionally a new sighting system was installed. The infrared search light equipment was removed, and all vehicles were fitted with thermal imagers except for the 674 A1(+) vehicles, which already had them.
• DF105 Marder 1A3 chassis with French AMX-13 turret fitted

taken from wikipedia,
https://en.wikipedia.org/wiki/Marder_(infantry_fighting_vehicle)