Thinking about how great the 13-11 is, maybe that should be the platform for the Magnum Regulator.
My initial thought for a large Regulator was just a 12" .33" thick spike, basically ignoring practicality, but the 13-11 is a proven piece and could fill multiple roles with a little tweaking.

What if they just put the Regulator handle and a clip point on the 13-11?