Object 907:
- The UBR-412B AP shell will be replaced by the UBR-412PB APCR shell, increasing average shell penetration from 219 to 264 mm (this type of APCR shells is standard ammunition for other Tier X U.S.S.R medium tanks)Adjusted the following characteristics of the D-54TS gun:
* Aiming time reduced from 2.3 to 2 seconds
* Reload time reduced from 7.1 to 6.5 seconds
* Dispersion on the move reduced by 20%