How to import .fbx as 1 file?

I am beginner in UE.When I import a model into UE, my model is divided into several parts. For example, if I want to import a gun, the gun is divided into parts of the body. How can I import the whole model into a single file?

I don’t know which software you are using to create your mesh, my only experience is with Blender. I guess you would need to join your parts as one mesh in this software before exporting it.

There are 2 ways of for this, I suppose.

  1. “Merge” all your mesh in your software and export as .fbx
  2. Manually import all the separated piece, place in a level with correct placement and select multiple actor → Merge as a static mesh.

“multiple actor → Merge as a static mesh” is nice way.thank you