I've just done mine, although I didn't know AA offered it as an option.
Remove action from stock.
Remove air stripper and forward part of shroud.
Remove A frame/Figure 8 barrel support. It's two pins and one C/S bolt into an aluminium rail that runs under the action, just tap the pins out with a drift.
Remove rearward part of shroud along with 'O' rings.
Refit air stripper and refit into stock. Re zero and Presto! Floated
You'll lose the spirit level bar
Some folk remove the aluminium rail that links the action block to the barrel support figure 8. I haven't yet.