https://www.planetminecraft.com/project/1-5-1-scale-pt-76b-and-btr-50/


The PT-76B was a later variant of the PT-76 amphibious light tank featuring a improved main gun, improved engine, and numerous other changes. The PT-76 is a light tank designed in the Soviet union, it was armed with a 76mm gun and its hull was used for a variety of future systems including the BTR-50 armored personnel carrier (included), ZSU-23-4 anti aircraft system, and various SAM transporters such as the 2k12 Kub

The BTR-50 was a armored personnel carrier built on the PT-76 light tank chassis, it was among the first of the APCs developed by the USSR post ww2, together with the wheeled BTR-40 and BTR-152.