The first image is in blender and the second one is in unreal engine 4. I parented the top half of the gun and the barrel of the gun to the bottom part of the gun. The top half of the gun is parented to an armature. When i export from blender i select the whole gun and ticked selected objects in the export window and then export. In unreal engine, only the top half of the gun is visible while the bottom half disappears. Please help and ask if you need more screenshots to help solve the problem.
In picture 1 you can see the animation is broken up into several files even though i only have 1 animation linked to one bone and another one linked to another bone.