It is armed with the 30 mm 2A42 multipurpose automatic cannon, which has a maximum rate of fire of 550 shots per minute, being able to fire 300 shots ...per minute at a sustained rate. In the same turret, a 9Sh119M1 platform is mounted in charge of firing the 9M113 Konkurs missiles (NATO designation AT-5 Spandrel), which gives the BTR-90 an appreciable anti-tank capability, with a maximum range of 4 kilometers and speed flight of 200 meters per second