The Russian T-60 light tank used a 20 mm cannon, and these light tanks were fairly important for the Russians at the beginning of Operation Barbarossa because there were not many other heavier tanks available at that time, so they were solely responsible for holding back the invasion while more medium KV and T-34 tanks could be produced. The T-60 was eventually upgraded with a 45 mm gun and better armor to become the T-70.
The Kit, well it is a simple kit, some detail is failing, I have some parts to a BM 8-24 from Mirage so I will do a little bashing when I build it and see what I can improve. I couldn't find any Aftermarket for this kit, even though it shows some on Scalemates, I didn't see any of it on eBay. It is descent though for the price I think, which was less than 15 Euros.
and here is a video from Night Shift on how to texture armor, he had a really good channel too
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