The BMP-3 is one of the most heavily armed infantry combat vehicles in service. The original version has a turret fitted with a low-velocity 2A70 100mm rifled gun which can fire conventional shells or 9M117 Bastion ATGMs (AT-10 Stabber). It carries 40 100mm-rounds and 8 ATGMs. A 2A72 30mm dual feed autocannon with 500 (300 HEI and 200 APT) rounds and a rate of fire of 350 to 400 RPM and a 7.62mm PKT machine gun with 2,000 rounds are mounted coaxially in the turret. The main gun elevates from -5° to +60°.[16] There are also two 7.62mm PKT bow machine guns, again with 2,000 rounds each. The BMP-3 is capable of engaging targets out to 5,000–6,000 meters with its ATGM weapon system 9K116-3 "Basnya". With conventional ammunition, such as the HE-Frag shell 3OF32, the 2A70 gun has a range of 4,000 meters.A BMP-3 of the UAE with a "Namut" thermal sightAccording to the manufacturer's web-site, all weapons can be fired while still, on the move, and afloat with the same effectiveness. The ability to hit targets on the move with missiles was successfully demonstrated during competitive evaluations in the UAE in 1991.

AG-1 + VTOL + TRIM = TURET
AG-2 = parking mode
AG-3 = amphibious mode

PITCH + YAW = steering