you can kill the crew of the BRDM2 with 30 rounds of AK74M 5.45x39. its armor does not protect the crew.
To reproduce spawn veh in eden. fire a mag into the drivers position. driver will die.
Tested the BTR60 to compare and it did not have this same issues and could successfully protect its crew from large amounts small arms fire. successfully protecting the crew from boxes of 7.62 CSAT machine gun at point blank range.