The BMD-4 or BMD-3M Bakhcha is an airborne infantry combat armoured vehicle entered service with Russian paratroops units in 2005. The BMD-4 is designed and produced by the Russian Company Kurganmashzavod. 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 it's firepower during landing operations. Some older BMD-3 are being upgraded to BMD-4, while a low-rate production of new vehicles continues. In 2008 Russian Air Borne Forces (VDV) commissioned about 30 new BMD-4. According to the Commander of VDV general-lieutenant Valery EvtuhovichC VDV already had one battalion equipped with BMD-4. Further modernization of the machine was underway. From 2009 it is planned to begin batch production of upgraded BMD-4 for airborne forces at the Kurganmashzavod. According to the governmental rearmament program to 2015, Kurganmashzavod. will produce and deliver not only BMD-4 and its modifications but also new perspective vehicles. In terms of firepower the BMD-4 is the most heavily armed vehicle in the world in its class.
BMD-4M: Modernized BMD-4, specific power block and running gear are changed on batch ones used in BMP-3.
The main armament of the BMD-4 (BMD-3M) is composed with the 100-mm gun and coaxial 30-mm canon. The main gun of 100 mm is equipped with an autoloader of guided and unguided HEF artillery projectiles and Arkan anti-tank guided missile. Additional armament consists of a 7.62-mm and 5.45-mm machine guns.
The turret is made in steel and the hull in aluminium. The turret and the hull provide to the crew a protection against the firing of small weapons and shell splinters of the battle field. The BMD-4 can be also fitted with additional armour
The BMD-4 is powered by the 2V-60-2 diesel engine, developing 450 hp. The hydro pneumatic suspension of the BMD-4 is adjustable to give a ground clearance of between 130-mm and 530-mm, although for normal road clearance is 450-mm. The suspension of the BMD-4 is composed with 6 small road wheels and 4 track-return rollers, on each side of the chassis. The drive sprocket is mounted at the rear, and idler at the front.
The BMD-4 is fitted with NBC protection and automatic fire suppression systems. Vehicle can be Para dropped with all the crew inside, thus saving time for the assembly after landing. The BMD-4 is fully amphibious and can fire all it's weapons afloat at sea worthiness 2. In the water, the BMD-4 is propelled by two water jets, mounted to each side, back of the hull.
On 100 mm and 30 mm gun, the 100 mm gun can fired anti-tank guided missile, one machine gun 7,62 mm
Modern fire control systems, panoramic commander TV sight, digital computer and tracker system.