Ok, so I checked out the afc tabs and they're not as bad as I thought. The holes aren't drilled with enough presision to give it a perfect fit but it's pretty close.
All parts are interchangeable.
The bases are identical save the posi T-post on the v2. The grub screws have a triangle screw head. Weirdest thing I've ever seen. Don't lose the wrench that comes with the
rda.
Sleeve and top cap have tighter o-rings.
The v2 comes with an oversized open bore delrin drip tip. Kind of proprietary. None of my other drip tips fit. The hole on the v2 top cap is larger than all of my other drip tips.
I like it but wished they would have supplied a SS tip as well as the delrin one. Not Chuff Enuff size but larger than standard.
Here it is next to a Stingray X drip tip for comparison.
Compared to the v1, the v2 is a definite improvement and worth the coin for the upgrades imo.