This is another one of Zvezda's cheap snap-together kits, this time of the Soviet BT-5 Fast Tank. They produced a lot of these, alongside the BT-2 and BT-7, until about the end of 1941, when production was ceased in favour of the T-34.
At present I only have this one, but I'll no doubt be getting more as and when I can.
I really do like these little Zvezda kits, but this one suffers from having a very prominent mould seam around the turret. I've cleaned it up as much as I could, but it's bad enough that it really needs more significant putty attention.