Wait, wait! Hold up, hold up - Dragoon G doesn't have an engine gear? Why did I not know this? D:
God damn hospitals...
Yes it does

Sooo why does it say HMC + Dragoon G BB in the same post? Or does it actually say nothing of the sort?
I assume it's in the orrignal casing, that came with Metal Driger?
That...makes more sense to me. Truth be told, I completely forgot about Metal Driger's make. Thanks for clearing that up for me.