I fixed the tower, now it turns (F, H), but it can't go up/down. A 4-speed transmission was added, as on the real T-80U. The engine has been adjusted, now it produces 60 km/h in 4th gear (the transmission is manual, to switch it, first press Q to turn on the manual shift, then X to switch gear to the next, and Z to switch to the previous one). Realistic gas turbine engine sounds and realistic gunshot sound were made.

✅ 14 configurations.
 There is an animation of caterpillars, they rotate and have a collision.
✅ The tower rotates (F,H). The gun can be raised/lowered (T,G).
✅ The gun can fire (Y).
✅ The working machine gun can fire (Home), rise, fall (PgUp, PgDn)
✅ Working headlights, taillights.
 There is a smoke grenade (End).

Disadvantages of the modification : There are no PBR textures, pixels are visible near the textures. Anti-cumulative screens cannot sway or bend. Also, there is no separate rubber texture for them. The tracks can bend strangely, which is not realistic. And also the caterpillars don't go much underground.

What's in the new version 5.2:
In this update, I have significantly improved the 3D model. I added decor such as cables, a PKT machine gun (it can't shoot). I added a new engine cover, new fuel tanks AND THE ENGINE ITSELF! In addition to the engine, I made the breech of the cannon, the loading mechanism and the crew seats. However, there are no textures. Again, this is a job for those who know how to do it. Now the tank doesn't look like a cardboard box. The tank needs new textures to see cables and stuff. They are very outdated and look pixelated. The original texture has turned black, so choose another one in the machine configuration