I asked the same question as well: "Also, for the Atomic Paintball CO2 Regulator V2, can the paintball adapter be removed and the regulator used with standard CGA-320 threads?"
Reply from Orlando:
"The V2 can not be switched to CGA320 it is its own proprietary design, this is why we make the V3 model. However the V2 series can be used with disposable cartridges as well by removing the paintball portion of the regulator."
Ah. Well thanks for that. I still haven't received anything from Orlando.