MEGA SIZE RX-78-2 GUNDAM Bandai NamcoGunpla Mega Size 1/48 Scale Plastic Model Assembly Kit MEGA RX-78-2 GUNDAM It's finally here! Bandai's MEGA SIZE 1/48 RX-78-2 Gundam and it's BIG! Once assemble ... d it will stand 37.5cm tall, the most impressive aspect of this giant kit is that you don't need any tools to build this at all. The parts that attached to the runner by a very thin length of plastic so you can break the pieces off with your hand.