Features- It pretty much retained the BT-7’s hull, turret, power plant and chassis.
Just without the 45mm gun instead the turret retained a 7.6mm DT machine gun and a flamethrower, which the ignition was carried out with two candles powered by the tank battery.
A pair of nozzles would also be placed on the roof of the engine compartment for spraying a toxic substance, degassing or smoke mixture. It also had the ability to spray them at any ambient temperature due to the pipe of the nozzles being located next to the engine manifolds.
This variant was a lot heavier than the original BT-7 weighing 15 tons and reduced it’s track speed to 16.5km/h, and on wheels 21 km/h.