Blender .fbx shows up incorrectly

Question

I made FPS hands and gun in Blender but when I export it on Unity as .fbx, it shows up incorrectly. Positioning of the gun is wrong finger is stretched ect. I applied all the transforms to the objects in Blender but it didn't fix it.

This is Blender screenshot

And this is Unity screenshot

Answer 1

I redid everything and it worked. I couldn't manage to identify the problem. I did everything as same as the last time. At the end of the day, it fixed it.