What do I need to use HPA in my GBB pistol

[RunningLaser2]

Could I get a list of everything I need as I'd have nothing and if possible a general price of each item.

Thanks

 

[MrTea]

Depends on what GBB pistol you have; AirTac UK have a range of magazine adapters available as found here. After that you'd need a tank, line & regulator as a starting minimum.