The adapor has a thread reducer which will screw into any air gun which currently takes an 88gram / 4oz disposable CO2 Bottle.
We recommend that you use a bottle with an adjustable regulator such as the First Strike 13ci set to around 1050psi +/- 50psi in order to achieve full velocity during rapid firing.
The bottle can be purchased as a single unit with the pressure kit fitted, or as a already set bottle including the butt stock and adaptor.