SPRUT SD from Armored Kill v2 mod.
The 2S25 Sprut-SD (Russian: Спрут; English: Octopus) is a light tank based on the BMD-3 chassis, but with a much larger 125mm smoothbore gun. It is a modern-day tank destroyer manufactured by Volograd Tractor Factory.
The 2S25 Sprut retains most of the features of its BMD-3 cousin and is meant for the Russian Airborne forces as a tank destroyer that can be airlifted into battle and move about quickly. The armor on the turret is made of welded aluminum with a composite skin to keep it light for airborne drops, but it retains the strength to be able to hold up against 23mm rounds from about 500 meters away.