A brilliant kit of the 155mm cannon nicknamed "Long Tom," for obvious reasons. The detail is extremely sharp and accurate. The tires are rubber, and of course are molded separately from the plastic wheel hubs. The 155mm barrel is made of turned aluminum, and features accurate rifling. The model can be built in either transport or firing mode, but it does not appear to be convertible once built (that is, you have to choose one mode and build it that way). A nice kit of a big gun!