Blender to Unreal Snags

I am considering the weapon I have right now "done" although it probably isn't. Anyway, I'm trying to get it to Unreal so it's usable and I can begin testing things in Unreal properly.

However, I've hit a bit of a snag. I import the FBX file for the weapon and it is HUGE and therefore unusable. When I attempt to scale it down, the blades on the front disappear completely which also makes it unusable. I haven't even been able to see if the animations work because the weapon just breaks.

Since I get frustrated easily, I asked on multiple Discord servers and on the Unreal forums so now I play a horrible waiting game. Horrible because I can't figure it out myself no matter what I do, I've tried a bunch of different things so I don't have any more ideas.