4TP

4TP, otherwise known as PZInż 140, was a Polish light tank prototype. It was designed by 16 December 1936 by Edward Habich of the Państwowe Zakłady Inżynieryjne works. A light reconnaissance tank, it was to become a heavier replacement for TK-3 and TKS tankettes in Polish service. In addition to light, manoeuvrable chassis, the tank was to feature a turret with one nkm wz. 38 FK autocannon and one ckm wz. 30 machine gun.^[1]

4TP
Prototype with unarmed turret
Type	Light tank
Place of origin	Poland
Service history
In service	1937-1939 (prototype)
Production history
No. built	1 (prototype)
Specifications
Crew	2

Only a single prototype was built. Extensively tested by the army, it proved a reliable vehicle. However, the army decided that by the time serial production could start, the design would already be outdated, and no serial production followed.^[1]