Static vs Skeletal Mesh Replication

For weapon drops and grenades in my FPS I was using a static mesh and everything seemed to be working great with respect to replication.

I wanted to allow the weapon drops to have moving components (empty pistol has its slide back) so I updated them to use SkeletalMeshes instead. I am finding some odd behavior where the movement of the skel mesh does not seem to be replicating.

Is there a difference between Static v Skeletal meshes when it comes to movement/replication in UE4?

What kind of skeletal mesh features are you using that you would expect to be replicating but aren’t?