. However, I want to be able to use a rechargeable battery in there, and not be limited to primaries. It looks like there are no complete MDC's with this capability.
Thanks.
You've hit on the main weakness of the MDC lineup IMO. As mentioned, your other choice is a VME head with M61 or M361 dropin and MDC body.
I too have struggled with this since I'd gone completely to rechargeable but I broke down and got a CR123 MDC. With the batteries relatively cheap now and the long flat regulation of these heads, I don't think this will be a great hardship but I'm really looking forward to Malkoff releasing a MDC that will run on rechargeables and use the Hi/Lo ring.
I'd likely buy multiples if they accepted different power dropins as well.