Hey GrimResistance,
you would still need an ATC spindle like the Jian-Ken JGL-80 or the Mechatron ATC-8022-42-HSK25 (Unboxing video), a tool magazine, and the pneumatics to run it. See all this in action here. Tom @TMToronto already presented here the Masso G3 before the Onefinity Elite Series came out.
The Masso Documentation for different tool changing setups is is here.
Onefinity offers a tool setter here. You could also buy another one, e.g. here.