These are actually repaints as they tend to get knocked about during our ACW games, in Jonny Reb double or tripple sixs result in a out of ammo marker being placed next to the . Boyd and I prefer these than simple cardboard cut pieces, they are available from Eureka miniatures, made for 15mm and 28mm Fire and Fury.
The two limbers are From redoubt I think
http://eurekamin.com.au/product_info.php?products_id=1359
cheers
matt