As I understand the System 1 being discontinued, it was the factory fire (in '94) that distroyed the inventory, the plans and the machinery. I have a System 1 with all 5 barrels. .32, .50, .54, .58, and 12ga.
I like the .32, .50 and 12ga., but haven't fired the .58 or the .54. It does require a little more effort to break down and clean. I can clean my T/C New Englander in less time. Dixie Gun Works still has some new System 1's with .50 and .54 in SS and Blue.