This is the sixth LEGO tank i've build. Technically it's very similar to my Mark 5-2 except that i included a turret-ring this time. I did that to give extra stability to the turret: in the previous build the turret was a little too unstable. I also tried to make the turret even smaller. I think this turret is about 30% smaller that the previous one. The hull is also quite a bit smaller. I believe this is about as small as it can be unless i manage to make the firing mechanism even more compact, which I seriously doubt. Finally, I tried to detail the model a little, and made it a little less blocky, although I still have to learn a lot about that.