GBU-43 MOAB BombGBU 43 MOAB bomb desktop display model. The GBU bomb is an extremely powerful and accurately delivered Massive Ordnance Air Blast Bomb (MOAB). Also known as the Mother of All Bombs, it delivers the 18,700lb BLU 120 B warhead bomb with KMU 593 B GPS INS, and is the largest ever satellite guided, air delivered weapon in history. The GBU bomb is equipped with fins and inertial gyro for controlling pitch and roll but is mostly GPS guided. Its design