Sean mentioned the 301 and 602 were compatible, so I guess that means the M301 uses the same threads as the M602 atty (which I think is compatible with the RN4081 and DSE103).
The M301 atty looks a lot like a 510 atty from the pics I've seen.
I'm wondering if 510 and/or 901 carts will fit properly in the M301, and if drip tips sized for 510/901 will also work in the M301?
I'm still searching for the right atty for me, so I'm keen to try this one out too.
401 - carts too small, over powered on full 3.7v batt
mods
901 - leaks (taste great though)
510 - mutes flavor (doesn't seem to leak)
Those are the only ones I've tried so far.
I'm hoping the M301 has good flavor and doesn't leak and has a cart capacity on par with the 510/901 and can handle the power of batt
mods... then my search could be over.