There was a posting on the Wofun Facebook group about adding 3D barrels to the Wofun MDF artillery which are avaiable from www.cornwallmodelboats.co.who do various gun barrels for model ship models . Here we see the original madel and one of the new metal barrels.
I carefully removed the old barrels and glued into place the new ones .
A comparison shot between the old and the new ones . I think they look much better , I was impressed that the barrels which seem to be made of a brass coloured metal where only about 80p each and may consider replacing more of my artillery barrels with them.