Imported models looks weird.

Hello.

My imported objects ( Created in Blender ) are looking like this

Anybody knows why it looks like this ?

These objects are not prefabs.They were imported from a folder I am using to store models that were created in Blender.

I am using Unity 5.6.1

Check if you have any hidden objects in the blender file (ALT+H). It looks to me that there are more models than just the gun.