Well, my search continues. I'm looking at Revolver's Ion and/or G2 now also, but I can't get an accurate idea of the sizes. I've PM'd one of the reps in the Revolver forum and am waiting for a response. The website lists lengths, but no idea if that's just the batt, batt and carto, or batt-atty-cartridge, and even then, what length are the cartos? I'm mostly sure I'll end up having to design and fabricate my own custom PCC to get exactly what I want, also.