Editing BMP-2 (section)

=== Weapons ===
The main armament is a turret with a stabilized 30&nbsp;mm [[30 mm automatic cannon 2A42|2A42 autocannon]] with dual ammunition feeds, which provide a choice of 3UBR6 AP-T and 3UOR6 HE-T / 3UOF8 HE-I ammunition and 9M113 Konkurs ATGM. The gun has a selectable rate of fire, either slow at 200 to 300 rounds per minute or fast at 550 rounds per minute. This gives a continuous fire time of 100–150 seconds (or only 55 seconds, depending on the rate of fire chosen) before running out of ammunition. The original stabilization provides reasonable accuracy up to a speed of about 35 kilometres per hour.

The AP-T ammunition can penetrate 15 millimetres of armour at sixty degrees at 1,500 metres. A new APDS-T tungsten round can penetrate 25 millimetres at the same distance. A typical ammunition load is 160 rounds of AP ammunition and 340 rounds of HE ammunition. The ammunition sits in two trays located on the turret rear floor. The gun can be fired from either the commander's or the gunner's station.

The commander's 1PZ-3 sight is specifically designed for anti-aircraft operation. Combined with the high maximum elevation of 74 degrees, it allows the 30&nbsp;mm cannon to be used effectively against helicopters and slow flying aircraft. The turret traverse and elevation are powered and it can traverse 360 degrees in 10.28 seconds and elevate through 74 degrees in 12.33 seconds.

Reloading the BMP-2's 30&nbsp;mm cannon can be somewhat problematic and can take up to two hours, even if the ammunition is prepared. The cannon is normally only used on the slow rate of fire, otherwise, fumes from the weapon would build up in the turret faster than the extractor fan can remove them.{{Citation needed|date=December 2010}}

The effective range of the 30&nbsp;mm cannon is up to 1,500 metres against armour, 4,000 metres against ground targets, and 2,500 metres against air targets.

A coaxial [[PK machine gun|7.62&nbsp;mm PKT machine gun]] is mounted to the left of the 30&nbsp;mm cannon. 2,000 rounds of ammunition are carried for it. On the roof of the turret is an ATGM launcher. On Russian vehicles this fires 9M113 Konkurs missiles. On export models it normally fires 9K111 Fagot missiles. A ground-mount for the missile is carried, allowing it to be used away from the vehicle. The missiles are a substantial improvement on the 9M14 Malyutka missiles used on the BMP-1, in both range and accuracy.

Behind the turret is the troop compartment that holds six troops. A seventh sits just behind the driver. The troops sit back to back, along the center of the vehicle. Down each side of the compartment are three firing ports with periscopes. Access to the compartment is by the two rear doors, which hold fuel tanks. Both doors have integral periscopes. The left door has a firing port.

In addition to the main weapons, it can carry a [[MANPAD|man-portable surface-to-air missile launcher]] and two missiles, and an [[RPG-7|RPG launcher]] and five rounds. The vehicle is fitted with a PAZ [[Overpressure (CBRN protection)|overpressure NBC system]] and fire suppression system, and carries a GPK-59 [[gyrocompass]].