Converting a spool valve gun is MUCH more difficult than converting a poppet gun. Especially on a DM. With a single tube spool like the Droid/Clone, it means replacing the entire drivetrain.
Frankly I'm not sure even that would work in a DM.
It has already been done on other spool markers, in fact several of the GI Milsims guns are just that...
The micro50 for example is a vibe (with some cosmetic changes) with a 50 caliber drive train, Everything is just scaled down.
I'd bet good money that Dye could easily release a new drivetrain for the DM series guns...