CMAC Model Railways CAF C3000. CMAC Model railways' range covers a wide range of prototypes Northern Ireland Railways: 80, 450, C3000, C4000. CAF: 331, 332, 195, 196, 197. The models in my range have not been designed around a specific powered chassis but this is left up to the builder and there are a variety of option including modifications of ready to run chassis and the use of powered bogies such as the black beetle.