The PPG tankette (, literally "mobile machine-gun nest"), also known by the prototype name Obiekt 217, was a Soviet tankette produced for fighting in Finland. This vehicle never saw combat. Soviet infantry took huge losses attacking Finnish fortifications in the Winter War. To compensate, they sometimes assaulted them in armoured sledges towed by tanks. The PPG tankette was an attempt to create an infantry carrier to fulfil this role. About a hundred were produced at the Kirov Factory in Leningrad in 1940 and rushed to the front, but didn't make it to Finland in time to be used in combat.