The following pics are not the best but the first one is clear. I just completed a new limber for my CS artillery. I went into some extra details on this one. I drilled out the barrel and vent in the back. One of those small things only I will know but love to do. I also added the implements and a hook for the bucket to actually hang under the gun. The limber chest opens up and the gun comes off.
Here is a short clip of the gun. You can see the wheels move and the bucket swinging underneath.