Not sure, but the look is similar to the italian OTOMATIC that instead has a 75mm cannon with a 120 rounds a minute (2 rounds a second)

oh ok @Sobta @Afjklol thanks for the explanations.

My process for a vehicle is typically to think about what I need, what capability do I want filled and decide the desired specification that can achieve it. Then I look for some inspiration as I want it semi-grounded in reality, and combining several vehicles usually result in something unique rather than a not-replica. Although the latter is fine too. I set a size constraint and then prototype several weapons until get one I'm happy with the performance and can fit within the constraint. I usually design the turret around the weapon to make sure there is space. I then look at where it is most likely to get hit at and add armor there while putting all other components like AI and engine on the opposite end.This usually means front is armor, and rear is AI/engine. If vehicle won't be getting hit, then I ignore this part. I then test it several times to make sure I'm happy with it before decorating.

My Khertland builds don't use clipping or mesh hiders as a self-imposed rule. I usually cram everything as tightly packed as possible. I use injector fuel engines as they are quite small and since a couple wheels can get you decent speed, it doesn't drain that much fuel. The main focus for combat effectiveness is the weapon system and protection. So you need to balance between these two
Depending on the vehicle, I may sacrifice armor so I can fit a bigger gun on a smaller platform. Sometimes literally having no armor along the side and roof, and hidden using decorations.
Meanwhile for my tank, I concentrated the armor on the front where it is most likely to be hit, and made sure the AI face the front to the enemy. Armor isn't your only means of protection, I made the C-RAM system to counter missiles without needing to armor all my vehicles. My vehicles are smaller and cheaper than most, so I designed each vehicle to complement each other so they can punch above their weight.

@LoganNS spinblocks and pistons, you can use them to clip blocks, because if a block is on a spin or piston it will not collide with blocks on and around the vehicle.

I get that most of stuff like this is decorations, but how do you manage to fit everything in your builds to make it actually combat worthy with so little volume and blocks ? is it just cramped together in one compartment or spread out ? and does it use an electric engine or a small injector motor ?