This is an injection-plastic military vehicle model kit.
From Trumpeter's website:
The BMD-4 airborne combat vehicle entered service with Russian airborne units in 2005. This vehicle uses the BMD-3 chassis, but carries a significantly more powerful armament. In some cases the BMD-4 can replace main battle tanks and artillery units with its firepower during landing operations. Some older BMD-3 are being upgraded to BMD-4, while a low-rate production of new vehicles continues. Currently about 60 of these vehicles are in service with the Russian airborne troops.
This new airborne combat vehicle is completed with the same armament, carried by the Russian BMP-3 IFV, the 100 mm gun and coaxial 30 mm cannon. It has considerably more firepower than its predecessor. The 100 mm gun can also fire Bastion laser-guided anti-tank missiles. This missile has a range of fire in 5.5 km and can also target helicopters. Ordinary 100 mm rounds have a maximum range of fire in 7 km. The 100 mm gun comes with an autoloader, which also loads anti-tank missiles. The 100 mm gun of the BMD-4 has a rate of fire in 10-15 rounds per minute.